Thermodynamics 09 || Carnot's Heat Engine : Working , Graph and Refrigerator JEE MAINS /NEET

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  • เผยแพร่เมื่อ 13 ต.ค. 2024

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  • @PhysicsWallah
    @PhysicsWallah  5 ปีที่แล้ว +823

    Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App.
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    11 chap 12 || Thermodynamics 01 || Introduction ,Thermal Equilibrium n Zeroth Law of Thermodynamics
    th-cam.com/video/d64219dEwXk/w-d-xo.html
    Thermodynamics 02 (Physics ) | Internal Energy : Degree of Freedom , Law Of Equipartition Of Energy
    th-cam.com/video/bxpkO0G_mzg/w-d-xo.html
    Thermodynamics 03 || Heat : Specific heat Capacities Of Gases : Cp and Cv JEE MAINS/NEET||
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    Thermodynamics 04 | Work Done in Thermodynamics Physics | Difference in phy n chem | JEE MAINS /NEET
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    Thermodynamics 05 || First Law Of Thermodynamics with Best Numericals JEE MAINS / NEET
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    Thermodynamics 06 || Isothermal and Adiabatic Process With Best Numericals JEE MAINS/NEET
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    Thermodynaimcs 07 || Derivation of Cp - Cv = R , Mayer's relation important for School Exams ||
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    Thermodynamics 08 || Second Law Of Thermodynamics and Heat Engine Concept JEE MAINS / NEET ||
    th-cam.com/video/G4pRW1HNSlQ/w-d-xo.html
    Thermodynamics 09 || Carnot's Heat Engine : Working , Graph and Refrigerator JEE MAINS /NEET
    th-cam.com/video/XQU-9ERZdDE/w-d-xo.html

    • @surjeetchoudhary1525
      @surjeetchoudhary1525 5 ปีที่แล้ว +26

      Sir , we all are with you and hope that this journey continues , and you help millions of students to achieve what they want. We will do what we can. Salute you😊😊😊✌️✌️✌️✌️💪💪💪💪

    • @mastramgill8914
      @mastramgill8914 5 ปีที่แล้ว +10

      Sir give us your notes please

    • @feelthesong71
      @feelthesong71 5 ปีที่แล้ว +6

      Na deab

    • @abhishekarya8487
      @abhishekarya8487 5 ปีที่แล้ว +27

      Pata nhi pichle janm me kaun se acche kaam karm kiye the jo aapse pdhne ka mauka mila....!!!
      _/\_
      :-)

    • @Sachin_Meena.
      @Sachin_Meena. 5 ปีที่แล้ว +10

      ...Hamhare sir ji ka board 1 × 2 ka hai 😂😂😂😂🤣🤣🤣🤣🤣🤣🤣

  • @nishkrsh_
    @nishkrsh_ 5 ปีที่แล้ว +3541

    Ideal carnot engine ho na ho but aap ideal teacher ho sir

  • @pradeepsart1884
    @pradeepsart1884 5 ปีที่แล้ว +1919

    Sir,1:13:19 mein Q1-Q2ke neeche Q2 ayega,aapne galti se Q1 likh diya hai,jis kaaran answer 9 Joules a raha hai but correct answer 10 Joules aa raha hai.

    • @narmadabehera417
      @narmadabehera417 5 ปีที่แล้ว +99

      Yaa u r ri8.. sir se by chance galti ho gaya.. it's okk..

    • @archanadoshi4379
      @archanadoshi4379 5 ปีที่แล้ว +29

      Sahi he 9 J.

    • @archanadoshi4379
      @archanadoshi4379 5 ปีที่แล้ว +33

      Minakshi Sharma . First q1/q2 = t1/t2 se q1 and q2 me relation find karo as we know t1 and t2 in Kelvin . Then in eqn q1= w + q2 me put karo q2 ki value in terms of q1 and find q1 easily .that's 9 J

    • @shashankpaul7
      @shashankpaul7 5 ปีที่แล้ว +126

      10J would be correct!

    • @muskanagrawal7399
      @muskanagrawal7399 5 ปีที่แล้ว +28

      Yes RIGHT!!

  • @navpreetkaur8474
    @navpreetkaur8474 2 ปีที่แล้ว +182

    Timing:-
    Introduction
    1:30- 12:00 Heat Engine
    12:00- 18:00 Carnot Engine
    18:00- 36:00 Hypothetical
    36:00- 1:1:04 Numericals
    1:1:04- 1:16:00 Refrigerator

  • @ok-kb7yz
    @ok-kb7yz 4 ปีที่แล้ว +238

    1:03:25 ........if someone have doubt
    The efficiency of Carnot engine if T₁ and T₂ temperature are initial and final temperature .
    condition 1 :- when η ( efficiency of engine ) = 1/6
    then, 1/6 = 1 - T₂/T₁ ---------(1)
    condition 2 : when temperature of sink is reduced by 65K then, η(efficiency of engine ) = 1/3
    e.g, 1/3 = 1 - (T₂ - 65)/T₁ -----------(2)
    solve equations (1) and (2)
    2(1 - T₂/T₁) = 1 - (T₂ - 65)/T₁
    2 - 1 = 2T₂/T₁ - (T₂ - 65)/T₁ = (T₂ + 65)/T₁
    T₁ = T₂ + 65
    Put it in equation (1)
    1/6 = 1 - T₂/(T₂ + 65)
    1/6 = (65)/(T₂ + 65)
    T₂ + 65 = 390 ⇒ T₂ = 325K or 52°C
    Conclusion : its 65k and not 65°C

    • @dudiramadevi6141
      @dudiramadevi6141 4 ปีที่แล้ว +5

      Yes😁😁😁

    • @lakshyaverma7924
      @lakshyaverma7924 4 ปีที่แล้ว +12

      Thanx.. brother.. m soch rha hu sala glt kyo aa rha h mera

    • @ok-kb7yz
      @ok-kb7yz 4 ปีที่แล้ว +1

      @@lakshyaverma7924 welcome buddy.

    • @akshatsachan7810
      @akshatsachan7810 4 ปีที่แล้ว +13

      @@ok-kb7yz omg dude I just thought if someone had commented about that....Coz I was getting ans to be 1417℃ .......Thanku so much

    • @ok-kb7yz
      @ok-kb7yz 4 ปีที่แล้ว +1

      @@akshatsachan7810 😇

  • @qna8485
    @qna8485 4 ปีที่แล้ว +1502

    🤣 No one expected that in jee 2020 question would come from a topic which he discussed in last 2 minutes
    Life's not fair!!!

    • @renukapathania1473
      @renukapathania1473 4 ปีที่แล้ว +39

      1 mehene pehle konsa jee 2020 de diya apne???????????

    • @qna8485
      @qna8485 4 ปีที่แล้ว +79

      @@renukapathania1473
      The question on efficiency of refrigerator was in jee ( 8 jan shift 2 )
      Of 2020

    • @renukapathania1473
      @renukapathania1473 4 ปีที่แล้ว +38

      @@qna8485 oh yes ...sry actually i forgot ki jan m bhi ho chuka h jee mains

    • @ramanurag6553
      @ramanurag6553 3 ปีที่แล้ว +22

      BRO THAT'S WHY IT IS CALLED LIFE!! :)

    • @harshdidwhaaattt
      @harshdidwhaaattt 3 ปีที่แล้ว +10

      😂

  • @aditirangari10
    @aditirangari10 3 ปีที่แล้ว +380

    I finally completed this whole series and everything is so crystal clear to me thanks a lot sir really it made me gain my confidence again 😃

  • @vanshstalin7917
    @vanshstalin7917 5 ปีที่แล้ว +2506

    Sir I want to meet you once a lifetime

    • @deependragaur4991
      @deependragaur4991 4 ปีที่แล้ว +96

      Mere ghar se sir kvl 90 km dur hai Sir Allahabad mai hai ...

    • @vijaykumaryadav6834
      @vijaykumaryadav6834 4 ปีที่แล้ว +19

      I am also from prayagraj.

    • @yashgandharv8244
      @yashgandharv8244 4 ปีที่แล้ว +31

      Please correct your statement in lifetime not a lifetime

    • @unknownknown1653
      @unknownknown1653 4 ปีที่แล้ว +9

      ap bata saktein hai ke in physics heat gain and loss negative or positive kis case mein hotein hai

    • @diplatalunawat2547
      @diplatalunawat2547 4 ปีที่แล้ว +1

      @@unknownknown1653 positive

  • @mayanksingh4042
    @mayanksingh4042 5 ปีที่แล้ว +193

    Sir At 1:12:32 answer is Q1=10J and Your answer is coming 9J because u did (Q1-Q2)/Q1=1/9J but U have to do (Q1-Q2)/Q2=1/9J which give Q2= 9J and hence Q1= Q2 + 1= 9+1=10J

  • @abdulsaqeebrollno3681
    @abdulsaqeebrollno3681 11 หลายเดือนก่อน +22

    1:13:44 THIS IS Q2 = 9 J
    Q1 = 10 J
    Q1 = W + Q2
    Q1 = 1 + Q2
    Q2 = Q1 - 1 -------(i)
    Q2/Q1 = T2/T1 = 9/10
    Q1-1/Q1 = 9/10 ( using (i) )
    Q1 = 10 J
    As Q1 is the heat rejected to room And Q2 is the heat gone to engine

  • @aashish77
    @aashish77 5 ปีที่แล้ว +182

    physics wallah + concept wallah too😎😎😎😎
    sir, truly if you teach our mind becomes dithermic and your teaching goes directly to it. 😂😂😂😂
    thankyou sir

    • @Yuvrajroyal-T9
      @Yuvrajroyal-T9 7 วันที่ผ่านมา

      kaha ho bhai abhi aap

  • @sreejasaha1517
    @sreejasaha1517 2 ปีที่แล้ว +166

    its 3:35am and finally completed whole thermodynamics with every concepts clear

    • @Krixchait
      @Krixchait ปีที่แล้ว +6

      Its 2:28am and succesfully done in one go!!!❤❤❤

    • @sakshamtiwari4951
      @sakshamtiwari4951 ปีที่แล้ว +3

      Explain some real life applications of isothermal and adiabatic process

    • @aryxn188
      @aryxn188 ปีที่แล้ว +2

      Tell honestly, is his videos enough to get good percentile in jee mains?

    • @sakshamtiwari4951
      @sakshamtiwari4951 ปีที่แล้ว +1

      @@aryxn188 i don't know never given jee

    • @shreyathakur.22
      @shreyathakur.22 ปีที่แล้ว

      I completed at 3:40 am

  • @anjusoni300
    @anjusoni300 3 ปีที่แล้ว +99

    Sir chota sa topic bolkr saare topics cover krwa dete h....😂😂
    Alakh sir Rock's...🤘🤘🤘🤘🤘

    • @physicsb1062
      @physicsb1062 3 ปีที่แล้ว

      Hello students,
      I tried to explain some very important concept in this topic and the difference between heat engine, heat pump and refrigerator.which are very useful for neet and iit-jee. I am sure after watching video you will be confident in the topic. Here is the link
      th-cam.com/video/VzGyccrI-zI/w-d-xo.html

  • @ashishpratapsingh8629
    @ashishpratapsingh8629 5 ปีที่แล้ว +996

    Who thinks that pandey sir is not only a best teacher but also a best actor hit a like
    👇

  • @AshishKumar-kf5xy
    @AshishKumar-kf5xy 5 ปีที่แล้ว +64

    Best Explanation by far for whole Thermodynamics!!
    Love you sir!!
    Alakh Sir is the BEST!!

    • @jayantmalik69
      @jayantmalik69 5 ปีที่แล้ว +1

      Join my clan....War Leaguers .....let's rebuild it please come

    • @sanasanu5667
      @sanasanu5667 2 ปีที่แล้ว +1

      Sir

  • @mayankgargmbbskmcmanipal
    @mayankgargmbbskmcmanipal 3 ปีที่แล้ว +180

    after studying from you i actually understand the value of a good teacher

    • @faizaansari8370
      @faizaansari8370 3 ปีที่แล้ว +5

      Am also.

    • @aryxn188
      @aryxn188 ปีที่แล้ว

      Tell honestly, is his videos enough to get good percentile in jee mains?

  • @nileshkundu8134
    @nileshkundu8134 4 ปีที่แล้ว +45

    Sir, you are the one who still think us little ("Hello baccho!!").I personally like it very much. Every body think that we had became very much mature by attending one board exam. For my sudden maturity I have to face many problems in class 11. But you are an exception between them.

    • @foreverandalways6489
      @foreverandalways6489 3 ปีที่แล้ว +2

      true

    • @renunegi3418
      @renunegi3418 ปีที่แล้ว +2

      Kuch bhi bakna hai matlab hai na?? Kuch bhi senseless baatein

    • @sanathhegde6642
      @sanathhegde6642 ปีที่แล้ว

      exactly bhai, sir ko praise karne ke bahane mein kuch bhi likh rahe hai@@renunegi3418

    • @anonymousyt2219
      @anonymousyt2219 11 หลายเดือนก่อน

      ​@@renunegi3418?

    • @archismanjodder6478
      @archismanjodder6478 10 หลายเดือนก่อน

      ​@@renunegi3418hila le bhai

  • @sakerabegum5894
    @sakerabegum5894 2 ปีที่แล้ว +16

    It was a wonderful class in this topics,,,,i am from bangladesh and a student of 12th standard in bangla medium,,,, but i didnt feel any difficulties doing this class,,now i can imagine how engines of bikes works....this tutorial makes the topic so easy for me,,his teaching style is also wonderful,,how calmly he makes the topic so easy,,,,thank you very much sir,,,,,

  • @aadimanchekar1032
    @aadimanchekar1032 5 ปีที่แล้ว +157

    2:20 😂😂😂 pubg = subg ...and meri bandi wala scene😂😂
    Love is pain study for jee main😂😂😅🤣

  • @RAJESHGUPTA-wj7ob
    @RAJESHGUPTA-wj7ob 5 ปีที่แล้ว +212

    Physics wallah👍👍👍
    Chemistry wallah wallah,👏👏👏👏
    Or motivation mashaallah 🙏🙏🙏🙏

    • @RAJESHGUPTA-wj7ob
      @RAJESHGUPTA-wj7ob 5 ปีที่แล้ว +4

      Sir chaa gye aap to

    • @Beast-ed3wt
      @Beast-ed3wt 4 ปีที่แล้ว +4

      Hasane wallah

    • @elakiyae3952
      @elakiyae3952 4 ปีที่แล้ว

      RAJESH GUPTA com

    • @mohitagarwal2054
      @mohitagarwal2054 4 ปีที่แล้ว +1

      wah wah kya baat hai
      maza aagaya 😅😅😂😄😃😀😉😆

    • @prasadupadhyay2883
      @prasadupadhyay2883 4 ปีที่แล้ว +4

      Aur tumhara comment subahan allah😂😂

  • @hungrydino8337
    @hungrydino8337 3 ปีที่แล้ว +293

    2:26 sir predicted 2years before that PUBG is going to get banned !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  • @shrutikaamzire2832
    @shrutikaamzire2832 4 ปีที่แล้ว +31

    Actually it's a teacher's day today !!! Happy teacher's day ....I don't know whether you will read this or not but my respect and love for you can't be expressed by words only .... seriously you are the one of best teachers I have ever meet .....you don't make me feel like that you are not present and I'm watching recorded vdo ..your way of teaching and that explanation of topics can make anyone to love what you teach ....though I have not see you but as I watch your vdos daily the bonding has become such that you are as my others teacher's for me...may God give you all the things you wanna ...#THE BEST TEACHER....I LOVE PHYSICS and reason •••••YOU ....,🙃🙂

  • @ahmedowais2049
    @ahmedowais2049 4 ปีที่แล้ว +264

    The best thing that I love about this man is he couldn't realize us that we are watching a recorded video
    edit - thanks for 200+ likes

  • @pathanusairao5491
    @pathanusairao5491 3 ปีที่แล้ว +12

    Complete Allen ,Akash, and all other learning platform in one man. Hats off to you sirr...🙏🙏🙏. Sir life ke sabhi dreams me 1 dream hai aapse milna .... kaash yeh poora ho ....🙏🙏🙏

  • @atomictutor7964
    @atomictutor7964 4 ปีที่แล้ว +164

    A.o.a .. I'm also a Physics lecturer from Pakistan. I just really want to say only one thing, keep it up. Slam n bht sari duaen k asay he ache andaaz me ap Physics ki khidmat krte rhen 😊👌👍

    • @huzaifaabedeen7119
      @huzaifaabedeen7119 2 ปีที่แล้ว +15

      pakistan me bhi physics padhate ho kya tumlog

    • @andromeda8729
      @andromeda8729 2 ปีที่แล้ว +26

      @@huzaifaabedeen7119 kyu wo insaan nahi ha jo padai nahi karenge (any sense 😅 aapke question me bro...)

    • @huzaifaabedeen7119
      @huzaifaabedeen7119 2 ปีที่แล้ว +8

      @@andromeda8729 physics padhke kya karenge wo log... IIT, NEET to hai nahi,...

    • @andromeda8729
      @andromeda8729 2 ปีที่แล้ว +18

      @@huzaifaabedeen7119 10 and 12 to hai na ...waha padlenge knowledge jarruri hota hai...taaki koi bhi insaan apne tarike se kaam aacha kar sake 👍

    • @onlyaryasattitude6070
      @onlyaryasattitude6070 2 ปีที่แล้ว +6

      @@huzaifaabedeen7119 defence academy kolenge

  • @himanshusinghrajput3806
    @himanshusinghrajput3806 5 ปีที่แล้ว +14

    Thank u very much sir aapke wazah se hi mera poora final ka syllabus complete ho paya h .Mere physics wale teacher chutti pe chale gaye the humko laga ki aake sab padha hi denge aur bad me tution ki chutti ho gayi.Lekin ab mera sara complte ho gaya. Bas do chapter wo padhaye final ka jisme ki hum absent kar diye the to kuch samajh nahi aaya tha.
    Sir bhagwan aapko duniya ki har khusi de aap jo chahe wo aapko mile.💙💚💛💜

  • @mayankgargmbbskmcmanipal
    @mayankgargmbbskmcmanipal 3 ปีที่แล้ว +33

    you have been a revolution in the field of physics and have come as a blessing in my life and i promise to once meet you and thank you in my life for your free and precious lectures of physics.

  • @nowsheenfirdous7636
    @nowsheenfirdous7636 5 ปีที่แล้ว +23

    Maine tou career point se chuti le li 5 6 din tak...wahan heat n thermo start kia..maine soncha sir k videos se 2 din mai complete kar leti hoon khud se..waise b wahan tou aaj kal bass formality hi kar rahe hai wo upar upar se padha k...love u so much sir

    • @Saiyanwarrior-01
      @Saiyanwarrior-01 5 ปีที่แล้ว +1

      But still take a look at their modules.

    • @nowsheenfirdous7636
      @nowsheenfirdous7636 5 ปีที่แล้ว +2

      Yea I'll do questions from the module..

    • @kishansingh4939
      @kishansingh4939 5 ปีที่แล้ว +3

      Yarr yeh coaching varansi me hai career point shyad i am not sure

    • @Saiyanwarrior-01
      @Saiyanwarrior-01 5 ปีที่แล้ว +1

      @@kishansingh4939 bohot jagah branches hoti Hai aaj kal badee coaching kee jaise Aakash aur Resonance kee Hai.

    • @nowsheenfirdous7636
      @nowsheenfirdous7636 5 ปีที่แล้ว

      @@kishansingh4939 it has many branches..I'm from kashmir

  • @kshitijamishra5698
    @kshitijamishra5698 5 ปีที่แล้ว +204

    sir PUBG se jyaada mzaa aata h aaps padhne me....
    really....bhaiya....u r incredible..........

    • @kshitijamishra5698
      @kshitijamishra5698 5 ปีที่แล้ว +2

      @Sarthak Panwar asee baat ni h me kheti hu PUBG

    • @adarshbhardwaj3151
      @adarshbhardwaj3151 5 ปีที่แล้ว +5

      @Sarthak Panwar SIR K LECTURES ME JADA MJA AATA H PUBG SE ....PUBG ME DIMAG KHARSB HO JATA H BAS LGE RHO POORE DIN ME TO BORE HOGYA USSE AB😐🙄

    • @kshitijamishra5698
      @kshitijamishra5698 5 ปีที่แล้ว +2

      @Sarthak Panwar ok bhai.....
      PUBG is PUBG
      u HAVE won the DEBATE......

    • @kshitijamishra5698
      @kshitijamishra5698 5 ปีที่แล้ว +2

      @Sarthak Panwar thank you bhai

    • @karanvirsingh2830
      @karanvirsingh2830 5 ปีที่แล้ว +1

      @@kshitijamishra5698 IGN plz😂

  • @debopriyodas6344
    @debopriyodas6344 3 ปีที่แล้ว +11

    Duniya ki koi bhi bandi ap ki channel se zyada khubsoorat Nahi hai 🙏🏻🙏🏻🙏🏻🙏🏻

  • @doctorwithdreams4037
    @doctorwithdreams4037 5 ปีที่แล้ว +321

    Aagar aapse NEET k students physics padhe to unhe dar nahi lagega physics se ,gurantee 🙋🙋🙋🇮🇳🇮🇳💓💓💓💓

  • @jacobblack2544
    @jacobblack2544 5 ปีที่แล้ว +185

    1:16
    Haha!
    Kamaal karte ho Pandey ji 😂😍

    • @dakshbalhra1673
      @dakshbalhra1673 5 ปีที่แล้ว +4

      @@biologyexplorer2721 was this necessary you basterd

    • @marcusaurelius3782
      @marcusaurelius3782 3 ปีที่แล้ว

      i am hereagain affter one year with my fake account (i am siddhant)

    • @karthikgkumar281
      @karthikgkumar281 3 ปีที่แล้ว

      @@marcusaurelius3782 the twilight saga series guy🤔

    • @yours.rishi_1
      @yours.rishi_1 2 ปีที่แล้ว

      @@marcusaurelius3782 Bhai pehla vaala account kaha gaya?? 😂

  • @janiharsh2882
    @janiharsh2882 ปีที่แล้ว +66

    sir, i am first year student and in first semester carnot engines comes and i just forgot concept but i just remembered you that after watching your video i was very clear about it.🥰😇

  • @sachinsingh-8227
    @sachinsingh-8227 5 ปีที่แล้ว +10

    Sir I not a regular student of science pg but after watching your video. Classes ......ki yar q ni phle padhna chalu Kiya. 😌😌
    U r nice 👌........ science se hat k v bhaut kuch sikh gaya aap se.
    thank you Bhai 😘

  • @natiqueali8714
    @natiqueali8714 5 ปีที่แล้ว +101

    Sir my whole family is familiar with you...because i used to watch your all video...and my brothers and sisters also enjoy the video although they are in 6th and 3rd...😀😇😁

    • @explainer8130
      @explainer8130 9 หลายเดือนก่อน +2

      Mera bhai to kindergarden bhi nahi jata fir bhi enjoy karta hai

  • @sanketbhor8178
    @sanketbhor8178 15 วันที่ผ่านมา +4

    11th mein bhi aapse padhe the sir yahi video dekh kar aur aaaj B Tech ke placements mein bhi aaphika video dekh raha hu

  • @shrishti6581
    @shrishti6581 3 ปีที่แล้ว +47

    So finally i reached here after 8 lectures😌 and completed it.... thank you so much sir you are always a legend😊 i m here after surprise of half decade and thankyou so much for doing such a good job for us and in free
    Summary:- there are still some teachers like alakh sir who does not consider study as business THANK YOU SIR🥰

    • @totalstudy2977
      @totalstudy2977 ปีที่แล้ว

      Yes bro

    • @IASSTUDENT
      @IASSTUDENT ปีที่แล้ว

      I agree

    • @aryxn188
      @aryxn188 ปีที่แล้ว

      Tell honestly, is his videos enough to get good percentile in jee mains?

  • @renaverma44
    @renaverma44 3 ปีที่แล้ว +21

    An example of a true teacher !!

  • @pankajjangidiitb9057
    @pankajjangidiitb9057 3 ปีที่แล้ว +12

    Q.How much heat is rejected to room per second if 1J of electrical energy is given to refrigerator per second
    Ans:-10 joule

    • @swayamprakash4516
      @swayamprakash4516 2 ปีที่แล้ว

      yes exactly

    • @vensonrk724
      @vensonrk724 2 ปีที่แล้ว +1

      Sirne Q2 yani heat ejected from refrigerator hi nikal diya

    • @umaidah827
      @umaidah827 2 ปีที่แล้ว

      Yes right

  • @draculaofficialyt2396
    @draculaofficialyt2396 4 ปีที่แล้ว +33

    Love u from nepal
    We never feel bore on your lecture.. U do comedy u do give concept.. Hats up to u😊

  • @sahidsahid8546
    @sahidsahid8546 4 ปีที่แล้ว +5

    lecture starts from 12:13 uske phle sir ne pichle lecture wala bataya hai save ur time it very precious 😇😇😇

  • @bhawanamaurya3880
    @bhawanamaurya3880 3 ปีที่แล้ว +71

    1:13:17 dono side 1 minus karne kr baad Q1-Q2/Q2 = 1/9 hona chahiye shayad aapne Q1-Q2/ Q1 kar diya

  • @shahtabish3143
    @shahtabish3143 3 ปีที่แล้ว +61

    Sir in last question answer is 10 joules not 9 joules.

    • @iamsamridhmukha
      @iamsamridhmukha 3 ปีที่แล้ว +1

      Yes I think the same

    • @AnshikaVerma-zi2gr
      @AnshikaVerma-zi2gr 3 ปีที่แล้ว +2

      Yesss Q1-Q2/Q2 shoul b there

    • @ashutosh2_0_0_3
      @ashutosh2_0_0_3 3 ปีที่แล้ว

      Yes sir galat Kar diye hai

    • @pronaybhoumick1897
      @pronaybhoumick1897 3 ปีที่แล้ว +2

      Ha manta hu sir ne galat kiya
      Par answer 9 joule hi aa raha hai sahi solve karne par

    • @ashutosh2_0_0_3
      @ashutosh2_0_0_3 3 ปีที่แล้ว

      @@pronaybhoumick1897 😂😂

  • @PriyanshuYadav-wi4du
    @PriyanshuYadav-wi4du 4 ปีที่แล้ว +53

    Best physics teacher in the world

    • @ajitpradhan3706
      @ajitpradhan3706 3 ปีที่แล้ว +1

      Bhram me h tu

    • @shauryapallav5674
      @shauryapallav5674 3 ปีที่แล้ว +4

      Alakh Pandey and Walter Lewin are best physics teacher

    • @backgroundmusiccreater7594
      @backgroundmusiccreater7594 3 ปีที่แล้ว +1

      @@ajitpradhan3706 Tu to jhaat ukhad raha hai bathkar alakh sir best best best best best💯

  • @Legendgaming55-tb
    @Legendgaming55-tb หลายเดือนก่อน +2

    44:22 sir W3 is supposed to be negative as the gas is compressed

  • @adityaprakash8217
    @adityaprakash8217 3 ปีที่แล้ว +7

    I want to give you all just a piece of information which may be useful
    K = (1/η) -1
    where K = coefficient of performance of refrigerator
    η = efficiency of heat engine

  • @itsalluptome6282
    @itsalluptome6282 4 ปีที่แล้ว +8

    Sir, nothing can be as beautiful as beauty of giving knowledge is...u really are a great teacher. Ur beginning of the lectures give me the direction of life. Thank u sir

  • @Physicswithfun1
    @Physicswithfun1 ปีที่แล้ว +12

    Done lecture now work on numerical and notes ☺️👍thnks sir

  • @karimnawaz8221
    @karimnawaz8221 3 ปีที่แล้ว +5

    Not a common teacher at all sir u r extraordinary teacher...zabardast method of teaching

  • @abhinavkaintura7050
    @abhinavkaintura7050 3 ปีที่แล้ว +5

    Sir, in the last exercise question, 9J is Q2 not Q1 as in denominator we had Q2 not Q1, so plz check it once and confirm it....I may be wrong but plz clarify it

  • @aditishrivastava1601
    @aditishrivastava1601 3 ปีที่แล้ว +19

    I was reading comments and not focusing on the lecture then at 6:18 sir suddenly clapped for the attention 😂😂😂

  • @ajjurider6578
    @ajjurider6578 4 ปีที่แล้ว +13

    In last question 1:13:28
    according to me--
    Heat rejected should be Q2 not Q1 as seen in the last concept related to K 1:15:30
    Then if you try to find Q2 then Q2 = 9J & that the option available there so may be my assumption ( heat rejected =Q2 ) is right ...
    And Q1=10j but question is all about Q2 not Q1

    • @physicsb1062
      @physicsb1062 3 ปีที่แล้ว

      th-cam.com/video/VzGyccrI-zI/w-d-xo.html just watch it till end. I am sure you will be more confident in the topic and ending with a beautiful question important for neet and iit jee.

  • @sayantanpal4570
    @sayantanpal4570 5 ปีที่แล้ว +46

    sir i think u did a mistake in 1:13:27 bcs (Q1-Q2)/Q1=1/10 , NOT 1/9............... PLS LET ME KNOW IF IAM WRONG ,,,,, BTW IT WAS OUTSTANDING LECTURE SIR.....THNKS.....

  • @baljobansingh9668
    @baljobansingh9668 2 ปีที่แล้ว +3

    Sir have done wrong at 1:13:23 in refrigerator sum
    Before he have written q1/q2=10/9 and when he did -1 on both side he then wrote q1-q2/q1 which is wrong
    It Will be q1-q2/q2=1/9
    W/q2=1/9
    Q2=9
    But we require Q1
    So
    Q1=W+Q2
    Q1=1+9=10J

  • @vaibhavaggarwal7803
    @vaibhavaggarwal7803 4 ปีที่แล้ว +6

    Kabhi real superman toh nahi dekha tha but aaj lagta hai ki iss duniye ke sabse bade superman #The alakh sir ko dekh liya.
    😍❤

  • @mayukhroy5961
    @mayukhroy5961 2 ปีที่แล้ว +30

    Lecture actually starts at 12:05.
    Earlier recapitulation of earlier lecture.

    • @saswatadebsarkar1797
      @saswatadebsarkar1797 ปีที่แล้ว +1

      Thank you so much

    • @Leo-42018
      @Leo-42018 ปีที่แล้ว

      Pls tell me was this playlist enough for jee mains..I mean total concept covered or not

    • @mayukhroy5961
      @mayukhroy5961 ปีที่แล้ว

      This playlist will help in clearing basic concepts but for jee questions should be practiced from a book

    • @Leo-42018
      @Leo-42018 ปีที่แล้ว

      @@mayukhroy5961 I mean is this concept enough to solve jee mains questions?

    • @mayukhroy5961
      @mayukhroy5961 ปีที่แล้ว +2

      @@Leo-42018 Yes

  • @enterpassword1365
    @enterpassword1365 3 ปีที่แล้ว +46

    How can someone move on without liking this video
    Best teacher sir hats off

  • @vijayalakshmi-ng8id
    @vijayalakshmi-ng8id 5 ปีที่แล้ว +9

    Sir! Aap kaise manage karte ho itni Kam time mein itni good quality content videos both in physics and chemistry? Khash hum bhi aapki tarah productive hote! You are a true inspiration sir!

  • @bebrockz52
    @bebrockz52 ปีที่แล้ว +14

    Me after roaming to every short lecture video.. coming back here clearing all my doubts😅sir u r the best

  • @debjitsaha8911
    @debjitsaha8911 3 ปีที่แล้ว +7

    Sir your teaching style is awesome 💗... Very lucky to study from a teacher like you.. 🙏❤..
    Thank you sir for all your efforts🙂

  • @ashn6611
    @ashn6611 5 ปีที่แล้ว +10

    Thank you sir so much. Aap hamari help krne ke liye boht mehnat krte ho. Love you sir 🤗🤗🤗🤗

  • @prakharrai114
    @prakharrai114 4 ปีที่แล้ว +14

    can someone help?..at 1:15:25, shouldn't it be heat extracted by the refrigerator instead of rejected...??

  • @vivekpatel7452
    @vivekpatel7452 ปีที่แล้ว +6

    6August 2023
    Thank you sir I am a droper of jee mains in 2023 & i am completed thermodynamics through your videos it was asom sir ☺️☺️☺️

    • @Leo-42018
      @Leo-42018 ปีที่แล้ว

      Is this enough for jee mains .,?? Questions ban rhe kya????

  • @shreyarunthala2258
    @shreyarunthala2258 4 ปีที่แล้ว +17

    Thank you sir so much one day before exams i watched all your videos of thermodynamics thank you for this :)

    • @amangajbhiye8554
      @amangajbhiye8554 ปีที่แล้ว

      di really just in one day how is it possible I completed in 3 days at 1.25x speed

  • @santoshnangare9005
    @santoshnangare9005 5 ปีที่แล้ว +80

    Sir instead of cleaning the board by your hand please use duster. Your skin may get affected by the ink. Please take care sir

    • @huzefa_o77
      @huzefa_o77 4 ปีที่แล้ว +4

      😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱you really are jee/neet student

    • @santoshnangare9005
      @santoshnangare9005 4 ปีที่แล้ว +10

      @@huzefa_o77 why are you asking ?

  • @yahskaehttaerg7299
    @yahskaehttaerg7299 6 หลายเดือนก่อน +1

    Sir at 1:13:11, energy rejected should be 10 J as you also have to add the 1 J from electrical work

  • @raheelkhan2529
    @raheelkhan2529 3 ปีที่แล้ว +18

    Love from kashmir ......Allah aap ko apny maqsad Mai kamyaab Kary ...aameen

  • @nehachauhan8393
    @nehachauhan8393 3 ปีที่แล้ว +5

    Sir aap jitna brilliant pdhate ho utna hi aacha gaate bhi ho😁😁
    You are the best teacher of physics 🥳🥳😇🥳🥳

  • @lovkesh3920
    @lovkesh3920 3 ปีที่แล้ว +8

    Best part of this video "Churake dil mera carnot chala"

  • @arunavgogoi2696
    @arunavgogoi2696 5 ปีที่แล้ว +29

    Thank me later..
    All who are watching this lecture...u will find a silly mistake on the refrigerator question the answer will be 10 joule...
    "SO PADHAI KARTI RAHIYE ALL THE VERY BEST" and enjoy the lecture

    • @kaliakaburi9287
      @kaliakaburi9287 4 ปีที่แล้ว

      🐽🐽🐽🐽🐽🐽🐖🐷

  • @notsoboring
    @notsoboring 5 ปีที่แล้ว +6

    Sir..no words for your efforts you ve taken for ur students...thank u sooooooooooooooo much n GOD BLESS YOU...!!

  • @learncafe6720
    @learncafe6720 7 หลายเดือนก่อน +3

    Alakh sir efficiency ~100%

  • @jainamgandhi3651
    @jainamgandhi3651 4 ปีที่แล้ว +65

    Sir predicted that pubg will be banned....cause he told"aage ki gen soochegi ye pubg kya chiz hai"🤣🤣 2:21

  • @mukesgodara5083
    @mukesgodara5083 4 ปีที่แล้ว +4

    You are best teacher or best singer

  • @ashwanipanwar9446
    @ashwanipanwar9446 3 ปีที่แล้ว +16

    Sir why we didn't take -ve sign with work in adibatic compression as well as in isothermal comprression???

    • @varunsudhir6502
      @varunsudhir6502 3 ปีที่แล้ว +9

      Hi, in isothermal compression as the volume decreases, according to sign convention the work should be negative. As V final is lesser than V inital the log term would be lesser than 1 and hence negative. So theres no need to keep an extra negative sign. In adiabatic compression, the final temperature is greater than the initial temperature but as 1- gamma would come as negative, the whole term would be negative. So no need for negative sign again. Hope this helped. Thanks.

    • @ashwanipanwar9446
      @ashwanipanwar9446 3 ปีที่แล้ว

      @@varunsudhir6502 thanks😄

  • @akhileshgupta6502
    @akhileshgupta6502 4 ปีที่แล้ว +6

    Ur really great teacher sir for all NEET and other competitors aspirants !!!Ur teaching technique is so unique and funny !!!Thank u so much sir ji ..........👌

  • @ourcreation2102
    @ourcreation2102 5 ปีที่แล้ว +13

    5:49 Jai MATA Di 💕😊
    Sir superb !! No words for u :) Speechless

  • @satyamkumarsingh9798
    @satyamkumarsingh9798 3 ปีที่แล้ว +1

    At 1:03:00 sink temp.. will be 325 ^0 C and T1= 390^0 C

  • @nupur7268
    @nupur7268 5 ปีที่แล้ว +34

    Sir at 1:13:20 you subtracted 1 from Q1/Q2 then the result should be Q1-Q2/Q2 i am a bit confused about the question ..plzz reply if any of u also felt the same

  • @amansingh3950
    @amansingh3950 4 ปีที่แล้ว +9

    And here my syllabus ends ...you saved me sir..you came in my life just as 'farista' ..I dont have words to say thnks to you..I love u sir more than I love myself ...you are universal constant in my heart ...we love uu 300000

  • @user-jn7ns7ps5j
    @user-jn7ns7ps5j ปีที่แล้ว +2

    Sir in the last question in place of q1 you find out q2 and wrote q1
    The value zof q1 is 10

  • @Sheetalk_
    @Sheetalk_ 5 ปีที่แล้ว +733

    "Meri bandi aapke channel se jyada khubsurat hai"🤣🤣🤣..abbe yrr sir kitte funny hai ...kaash sir se mil paate hum

    • @tanyasingh2418
      @tanyasingh2418 5 ปีที่แล้ว +37

      sheet karl He has been a student of my Chemistry Sir .....😄

    • @Sheetalk_
      @Sheetalk_ 5 ปีที่แล้ว +18

      @@tanyasingh2418 is it???.what a coincidence yrr ...!!😊

    • @tanyasingh2418
      @tanyasingh2418 5 ปีที่แล้ว +10

      sheet karl yeah!!😄😄😄😄

    • @tanyasingh2418
      @tanyasingh2418 5 ปีที่แล้ว +4

      Abhishek Ranjan yes😊

    • @RajeevKumar-sc6yg
      @RajeevKumar-sc6yg 5 ปีที่แล้ว +33

      @@exploringnaturalbeauty2102 Abey pagal wagal hai kya??? ghar mein maa behen nai hai tere....😂😂😂

  • @preetirohilla2617
    @preetirohilla2617 ปีที่แล้ว +3

    My favorite actor in this world . I want to meet him once in a life .

  • @anshmishra3066
    @anshmishra3066 3 ปีที่แล้ว +2

    12:50.....gazab hai carnot bhaisahab!!!....kehte hai ham sabse ideal engine banayenge.laga shayd bana diya ..nhi nhi ban paya
    Aise to ham bhi jaa rhe iit ...lekin asliyat to hame pata hai na!!

  • @ayaankureshi5115
    @ayaankureshi5115 ปีที่แล้ว +5

    what a great teacer , with great story ''''' WHITE BOARD SE SMART BOARD '''''🖖🤘

  • @sharmasharma3187
    @sharmasharma3187 5 ปีที่แล้ว +21

    I'm again in love with physics ...thnks a lot sir 🙈😍

    • @geethas2582
      @geethas2582 4 ปีที่แล้ว +3

      sharmaji ka beta😲😲

    • @divyansh8653
      @divyansh8653 2 ปีที่แล้ว

      Sarma ka launda ... tu hi hai na bhai 😅😅😅

  • @PrerakJain-i8t
    @PrerakJain-i8t 27 วันที่ผ่านมา +1

    Completed this whole series in a single day with notes❤

  • @keshabkrishna4121
    @keshabkrishna4121 5 ปีที่แล้ว +46

    Sir S-block ka next video kb aayega.Please reply sir

  • @coolkid69720
    @coolkid69720 8 หลายเดือนก่อน +5

    1:13:20 yaha par (Q1-Q2)/Q2 hona chahiye na? Sir toh denominator pe Q1 likh diya.. ! Pls batao koi..!!

    • @Raiyan-fp2rk
      @Raiyan-fp2rk 7 หลายเดือนก่อน

      Same problem 😢

    • @Kevinjoy2305
      @Kevinjoy2305 7 หลายเดือนก่อน

      I think galti se Kiya hoga

  • @priyankachoudhary2469
    @priyankachoudhary2469 2 ปีที่แล้ว +2

    Sir last refrigerator concept k question m aapne little mistake krdi q2 ki jgh q1 rkh diya so shi answer 10 hoga

  • @yuvikayadav1203
    @yuvikayadav1203 5 ปีที่แล้ว +215

    Sir you sound like Shinchan a sometimes! XD

    • @kaliakaburi9287
      @kaliakaburi9287 4 ปีที่แล้ว +2

      😂

    • @ajaygajbahar2739
      @ajaygajbahar2739 4 ปีที่แล้ว +2

      😂😂🤣

    • @aradhanasingh3416
      @aradhanasingh3416 4 ปีที่แล้ว

      ARADHANA SINGH
      38 minutes ago
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    • @Sangitanishad922
      @Sangitanishad922 3 ปีที่แล้ว

      So dam true bro...

    • @vyas2005
      @vyas2005 3 ปีที่แล้ว

      Very true

  • @pranjayjain
    @pranjayjain 5 ปีที่แล้ว +80

    *Ab thermo ka end*

    • @kiran8862
      @kiran8862 5 ปีที่แล้ว +3

      Ye last video tha thermodynamics ka?

    • @nitunath4210
      @nitunath4210 5 ปีที่แล้ว +3

      Toh aaj party kar lo........

    • @da_kamisama
      @da_kamisama 4 ปีที่แล้ว +1

      @Udayan Dasentropy ka kia hua

    • @aradhanasingh3416
      @aradhanasingh3416 4 ปีที่แล้ว

      ARADHANA SINGH
      38 minutes ago
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  • @abhaysingh9700
    @abhaysingh9700 3 ปีที่แล้ว +2

    In these 2 years I cleared all my doubts watching your videos. I have the confidence that i will get selected for neet this year and as a guru dakshina i will surely give 10000₹ in your bank account.
    All your students should do this.

  • @abhayraj4645
    @abhayraj4645 4 ปีที่แล้ว +29

    Not possible to remember all concept of Carnot heat engine for 2years 😭😭...

    • @narenderkumar4732
      @narenderkumar4732 4 ปีที่แล้ว +5

      Same bro m +2 student came back to revise....
      It's tough but bro trust me more u revise better it is nd do lotss of que u will do great in jee

    • @futuredoctor2813
      @futuredoctor2813 3 ปีที่แล้ว

      ☹️yes bro

    • @ahuman4
      @ahuman4 3 ปีที่แล้ว

      Same :((

  • @manashibiswas3372
    @manashibiswas3372 ปีที่แล้ว +5

    Sir I want to meet you once in my lifetime ,thank u sir 🙏 love ❤ from KOLKATA ,WB !!!

  • @aulakhfawad
    @aulakhfawad 2 ปีที่แล้ว +1

    Sir in question No 2 at 1:00:00 the temperature of sink should increase by 65K not by 65°C as the answer Don't match if we use 65°C.

    • @madhusudansahoo1189
      @madhusudansahoo1189 5 หลายเดือนก่อน

      Change in temperature in kelvin and Celsius are equal

  • @Harshal_Turkar
    @Harshal_Turkar 2 ปีที่แล้ว +6

    Dear Sir, I Want To Become A Great Lecturer Like You Who Fit Concept In Our Brain Permanently.

  • @secretprivacy250
    @secretprivacy250 2 ปีที่แล้ว +5

    Akele bande ne Pura Asia hila dala

  • @rontall6585
    @rontall6585 3 ปีที่แล้ว +2

    Sir at 1:02:56 the value of T2 should be in degree celsius that we used 65°c To find that value

    • @physicsb1062
      @physicsb1062 3 ปีที่แล้ว

      th-cam.com/video/VzGyccrI-zI/w-d-xo.html just watch it till end. I am sure you will be more confident in the topic and ending with a beautiful question important for neet and iit jee.

  • @awesomusmaximuss7074
    @awesomusmaximuss7074 5 ปีที่แล้ว +72

    Soo manny commments....sir wont read my comment 😭😭😭 sirrr.....ur teaching is jus ammazingg......thank u.