Ray Optics 20 : Combination of thin lenses in Contact II Cutting Of Lenses II Power - JEE/NEET
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- เผยแพร่เมื่อ 1 พ.ย. 2019
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2)Live Classes and recorded Video Lectures (New, different from those on TH-cam)
3)PDF Notes of each class.
4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level.
5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture.
6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021)
7)In case you missed a live class, you can see its recording.
8)You can view the videos any number of times.
9)Each chapter will be discussed in detail with all concepts and numericals
10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams.
***Test Series for XI & XII***
We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year.
The test series follows very logical sequence of Basic to Advance questions.&
Evaluation of Test and Solution to all the questions at the end of the test.
=========================================================
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12th Chapter 9 : Ray Optics 01 : Introduction & Reflection in a Plane Mirror JEE /NEET
• 12th Chapter 9 : Ray O...
Ray Optics 02 : Number of Images formeed by Two Plane Mirrors JEE/NEET
• Ray Optics 02 : Number...
Ray Optics 03 : Velocity in Plane Mirror - Velocity of Object & Velocity of Image JEE/NEET
• Ray Optics 03 : Veloci...
Ray Optics 04 : Spherical Mirrors: Introduction :Focus ,Focal Length & Focal Plane - Sign Convention
• Ray Optics 04 : Spheri...
Ray Optics 05 : Image Formation by Concave & Convex Mirror for Different Position of Object JEE/NEET
• Ray Optics 05 : Image ...
Ray Optics 06 : Mirror's Formula -Derivation for Concave & Convex Mirror +Basic Numericals + Concept
• Ray Optics 06 : Mirror...
Ray Optics 07 : Magnification - Magnification & Mirror's Formula Best Numericals JEE/NEET
• Ray Optics 07 : Magnif...
Ray Optics 08 : Combination Of Mirrors - Concept of Virtual Object JEE /NEET
• Ray Optics 08 : Combin...
Ray Optics 09 : Velocity in Spherical Mirrors - Velocity Of Object & Velocity Of Image JEE/NEET
• Ray Optics 09 : Veloci...
Ray Optics 10 : Refraction Of Light : Snell's Law & Refractive Index JEE/NEET
• Ray Optics 10 : Refrac...
Ray Optics 11 : Real Depth and Apparent Depth - Complete Concept with Best Numericals JEE/NEET
• Ray Optics 11 : Real D...
Ray Optics 12 : Refraction - Shift through a Glass Slab : JEE/NEET
• Ray Optics 12 : Refrac...
Ray Optics 13 : Critical Angle and Total Internal Reflection - TIR - JEE/NEET
• Ray Optics 13 : Critic...
Ray Optics 14 : Refraction through Prism : Concept , Numericals & Minimum Deviation Case JEE/NEET
• Ray Optics 14 : Refrac...
Ray Optics 15 : Refraction from Spherical Surfaces - Formula - Derivation and Numericals JEE/NEET
• Ray Optics 15 : Refrac...
Ray Optics 16 : Lens - Introduction : It's Types , Optical Centre , Focus , Focal Length JEE/NEET
• Ray Optics 16 : Lens -...
Ray Optics 17 :Image Formation By Convex and Concave Lens for different Positions of Object JEE/NEET
• Ray Optics 17 :Image F...
Ray Optics 18 : Lens Maker's Formula - Derivtion and All Types of Numericals JEE/NEET
• Ray Optics 18 : Lens M...
Ray Optics 19 : Magnification - Magnification & Len's Formula with Best Numericals JEE/NEET
• Ray Optics 19 : Magnif...
Ray Optics 20 : Combination of thin lenses in Contact II Cutting Of Lenses II Power - JEE/NEET
• Ray Optics 20 : Combin...
Ray Optics 21 : Silvering Of One Surface Of Lens - Silvered Lens JEE/NEET
• Ray Optics 21 : Silver...
Ray Optics 22 : Microscope - Simple Microscope & Compound Microscope - JEE/NEET
• Ray Optics 22 : Micros...
Ray Optics 23 : Telescope - Refracting Telescope & Reflecting Telescope JEE/NEET
• Ray Optics 23 : Telesc...
Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App.
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LAKSHYA Batch(2020-21)
Join the Batch on Physicswallah App bit.ly/2SHIPW6
Registration Open!!!!
What will you get in the Lakshya Batch?
1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey.
2)Live Classes and recorded Video Lectures (New, different from those on TH-cam)
3)PDF Notes of each class.
4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level.
5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture.
6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021)
7)In case you missed a live class, you can see its recording.
8)You can view the videos any number of times.
9)Each chapter will be discussed in detail with all concepts and numericals
10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams.
****Test Series for XI & XII****
We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year.
The test series follows very logical sequence of Basic to Advance questions.&
Evaluation of Test and Solution to all the questions at the end of the test.
=========================================================
For PDF Notes and best Assignments visit @ physicswallahalakhpandey.com/
Follow us on: Instagram instagram.com/physicswallah/
Facebook: facebook.com/physicswallah
===========================================================
12th Chapter 9 : Ray Optics 01 : Introduction & Reflection in a Plane Mirror JEE /NEET
th-cam.com/video/_nGZGo4gHGo/w-d-xo.html
Ray Optics 02 : Number of Images formeed by Two Plane Mirrors JEE/NEET
th-cam.com/video/xLMFyXXUfTs/w-d-xo.html
Ray Optics 03 : Velocity in Plane Mirror - Velocity of Object & Velocity of Image JEE/NEET
th-cam.com/video/-zjwlf1sPtQ/w-d-xo.html
Ray Optics 04 : Spherical Mirrors: Introduction :Focus ,Focal Length & Focal Plane - Sign Convention
th-cam.com/video/NdJEdh3xC2Y/w-d-xo.html
Ray Optics 05 : Image Formation by Concave & Convex Mirror for Different Position of Object JEE/NEET
th-cam.com/video/iEMPrqdGPMU/w-d-xo.html
Ray Optics 06 : Mirror's Formula -Derivation for Concave & Convex Mirror +Basic Numericals + Concept
th-cam.com/video/bSxWxqfhIYE/w-d-xo.html
Ray Optics 07 : Magnification - Magnification & Mirror's Formula Best Numericals JEE/NEET
th-cam.com/video/P2pLDPj-DWk/w-d-xo.html
Ray Optics 08 : Combination Of Mirrors - Concept of Virtual Object JEE /NEET
th-cam.com/video/GLBzqqpcRF4/w-d-xo.html
Ray Optics 09 : Velocity in Spherical Mirrors - Velocity Of Object & Velocity Of Image JEE/NEET
th-cam.com/video/IHL0rxbPWJo/w-d-xo.html
Ray Optics 10 : Refraction Of Light : Snell's Law & Refractive Index JEE/NEET
th-cam.com/video/VimYgbSw28g/w-d-xo.html
Ray Optics 11 : Real Depth and Apparent Depth - Complete Concept with Best Numericals JEE/NEET
th-cam.com/video/rUi_chxd_qE/w-d-xo.html
Ray Optics 12 : Refraction - Shift through a Glass Slab : JEE/NEET
th-cam.com/video/18DZxFMlNqE/w-d-xo.html
Ray Optics 13 : Critical Angle and Total Internal Reflection - TIR - JEE/NEET
th-cam.com/video/GIv3PN9vcR8/w-d-xo.html
Ray Optics 14 : Refraction through Prism : Concept , Numericals & Minimum Deviation Case JEE/NEET
th-cam.com/video/DnC5-gM81qc/w-d-xo.html
Ray Optics 15 : Refraction from Spherical Surfaces - Formula - Derivation and Numericals JEE/NEET
th-cam.com/video/SZm0KLuRpKI/w-d-xo.html
Ray Optics 16 : Lens - Introduction : It's Types , Optical Centre , Focus , Focal Length JEE/NEET
th-cam.com/video/-K9yueGZ5pI/w-d-xo.html
Ray Optics 17 :Image Formation By Convex and Concave Lens for different Positions of Object JEE/NEET
th-cam.com/video/jJB4roc5n2E/w-d-xo.html
Ray Optics 18 : Lens Maker's Formula - Derivtion and All Types of Numericals JEE/NEET
th-cam.com/video/KYHt5Dxza5Y/w-d-xo.html
Ray Optics 19 : Magnification - Magnification & Len's Formula with Best Numericals JEE/NEET
th-cam.com/video/_E_6EcA6Kr4/w-d-xo.html
Ray Optics 20 : Combination of thin lenses in Contact II Cutting Of Lenses II Power - JEE/NEET
th-cam.com/video/8i1_zA336Pc/w-d-xo.html
Ray Optics 21 : Silvering Of One Surface Of Lens - Silvered Lens JEE/NEET
th-cam.com/video/3eX52D-7G80/w-d-xo.html
Ray Optics 22 : Microscope - Simple Microscope & Compound Microscope - JEE/NEET
th-cam.com/video/-QIximwdKYI/w-d-xo.html
Ray Optics 23 : Telescope - Refracting Telescope & Reflecting Telescope JEE/NEET
th-cam.com/video/n8nCGAg3AuU/w-d-xo.html
4: 48 per sir , u negative hoga na kyuki u o se negative direction m measure kiya gaya h, to equation ho jayegi :
1/F1 = 1/v' + 1/u.
Sir please Reply
@@kanishkchugh2779 thodi hisab se feko yaar
sir why is the radius of curvature of plane lens infinite ?
Thanks sir
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Actually yess
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I also agree this
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0:34 combination of thin lenses
15:03 power of optical instruments
20:52 power formula for lenses
24:54 power formula for mirror
25:28 combination of power ( eq )
30:13 cutting of thin lenses(vertically and horizontally)
Same topic
By Naruka Sir from Kota
th-cam.com/video/GvRPaOgz1tg/w-d-xo.html
thanks
that was helpful coz i came to study reduced syllabus only
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Thanks
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Bhaut mst
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@@ghost10326 so what??
Viewers 26k
💓likes 2.6k
❓why
Yaar hum toh video pura dekhe bina hi like kar dete hai
Me bhi starting me hi like kar deta hu
Alakh sir is so active that whenever I try to take screen shots sir jumps in cente... 😂 😂
Sir is indirectly saying '' Apun ki bhi photo lo"" 😂 😂
@@AnuragYadav-vv1px hhahha lol same bro.. underrated comment 😜😂😂😂🤣🤣🤣🤣
@@mayankpandey5079 true.. 😂
bhai even i toooo
Alakh sir is so active that whenever I try to take screen shots sir jumps in cente... 😂 😂
Sir is indirectly saying '' Apun ki bhi photo lo"" 😂 😂
Very true
😂
Hmm
He must be saying apni notes banao!!
😆
SAADI CHALTI AA DUNIA JALDI AA
मेरी चलती है दुनिया की जलती है 🔥🔥
केहर था सर मज़ा आ गया
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Same topic
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Back after a long time !! Missed you sir❤️😭
@Khushboo Bharti ya of course
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@Khushboo Bharti if you don't mind can I ask from where are you
Why he was not making videos
He is constantly putting his efforts and he is making videos as far it is possible for him,the frequency went low because as far I know he is not doing fine with his health,May god make him fit and fine soon❣️
Guys Alakh sir is a star..
He is creating millions of doctors and engineers..
Hats off to him!!
Seat to 1 lakh bhi nhi hoti
Kahan se aa rahe hain million
bro tum sirf ek saal ke seat ki baat kar rahe ho
Doctors and engineer ki seat total. Bhi itni ni hogi
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Some one supports me please request sir to increase frequency
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@@aliyaarshad3344 Any problem u
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डब्ल्यू डब्ल्यू फिजिक्
स वाला
25:00. Power of mirror and stuff
Yes 👍
@Sohel ♡ XD
This series is worth more than the current batches of pws
Thx sir
Kis kis ko intzarr tha sir ke lecture ka
Hit like
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Me
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Nase si ki tarah lat lag gyi hai
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kon se college mein gaye bhai?
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Kitni % bani bro
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a feeling of happiness comes when see noification
thank u sir
.
20:21 :- जिसकी focal length "छोटी" होती ...
I don't know why but I watched this line 2-3 times .
One small correction :- The unit of power of lens is dioptre
Sir it was my second comment on your video I see most of your videos but by downloading. I never think anything about the money you recieved from TH-cam I always think that you earn good enough by your choching or you may definitely do some other good work to fulfill your basic needs. But today when i just sliding down my TH-cam I got an video about your pay and how you started.sir from now onward I promise you. I am going to do or achieve something really big which no one can do or achieve. I see many motivational videos but my heart never fall in it or I never get feel. But the video which I see base on you and how started.how you rejected from job how you search salon after 2 to 3 kilometers walk and when you reached for interview you are rejected. Sir from my deep heart. I always be grateful for your help. I definitely meet with you . But not now after 10 years. Because now I am a student of class 11 and I am average till I complete this comment. From now timing 12am. I promise you I give my best in my 11 and 12 and definitely achieve something big in my feature. I always grateful to you. Thank you sir gi for lovely support and for you help.
Physicswallah = uprwallah
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Boht Hard tha Physics aur Maths Pass Karna
Physics Wallah aaya apni Zindagi me warna
Main toh padhai me fail ho jati jaise Race 3
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Jzakallah bro😊
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सर मैंने जब आपको हिंदुस्तान न्यूज़ में देखा तो मुझे कोचिंग वालों से ज्यादा अच्छा लगा कि मैंने कोचिंग नहीं लेकर बहुत अच्छा कदम उठाया yeh meri zindagi ka sabse accha डिसीजन था
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Mickey bhai aap kiski preparation kar rahe ho neet/jee
{ SAADI CHALDI AA DUNIYA JALLDI HAA ☺️☺️}.....jo samajh gya hit like😊👇👇👇
Kya hua matlab
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Ye physics walla ka duplicate v aa gya market me waah
Sir ki shaadi hone wali h ,,,isliye vdo frequency kam h...
Kisiko batana mat
@@adityagangurde3038 han thoda soye hai
All my love and respect to alakh sir , agr aap nai hote to sahi me sir mera kuch nai ho skta tha , kya se kya bna diya hai n aapne zindagi ka direction change kr diya hai , thanku sir thank u bhi kam hi hai 🙏🙏🙏❤️❤️❤️😊😊😊😊.
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How was ur exam today?
Ias vale science kabse lene lage
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His old videos r best
Kitna paye bhai?
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Mera Guru mera Raab ❤️
Shurkia Guru g 🙏🌹❤️🙇😌🌸🧿
Tiger Zinda Hai!!!!😇😇😇
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#keep learning
Welcome Back Sir
Missed you sir and your teaching style.
God bless you sir
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Love u sir u will be responsible for all my board marks of phy ,chem and my neet marks ❣️❣️ may u live long
Sir ki t-shirt 😂😂😂😂😂😀😀
Physics Walla + physics galaxy = complete physics for jee advanced
Very helpful video ,. Keep it up sir . Thank u so much for your efforts 🙏
Sir ki T-shirt ka liya like to banta h 😍😍😍
Haha
sir ki tshirt k liye tum kyu like mang rhe ho bhootnike
Glad to see you back again with full energy
Heyy miss
Finally aap sb is ch ke is lecture tk pahuch gye...ab bss kuch der aur and then u all will get mastery In this ch 🎉🥳
Now physics wallah is a great company
Feel relaxed and get life back and become motivated to see you .
Sir please try not to take long brakes please.
Thanking you
Your student
Kon kon sir ke iss white board ko miss krta h ..🥰
dhua dhua kardiye guru waaahhhh feel diladiya aaapne.................i love the way u teach....
sadi chldi ee duniya jldi ee😅😅🤘🤟sir know about feelings of students especially boys
Question 1
I. IOcm
Il. 30 cm
I was feeling today that *Alakh sir entry marenge* .... aa Gaye
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Fabulous 👌🏻😍.. Tqsm Sir 🙏❤️
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If anyone studying optics from uh sir .......
I ensure that he/she never feels difficulty in solving problems of optics ...
Uh are best sir....
😍😍😍
It's our pleasure if uh start wave optics soon ....
In lakshy batch you were teaching this topic for jee main so I came here for boards😁😁
Are bhai😂😂😂😂😂
Same bhai
Sir ji m agar neet crack kar sakti hu without coaching just because of you my god 🙏🙏🙏🙏🙏🙏🙏❤❤❤❤❤💗💗💓💞💞💕💟💟❣❣💝💝💖💖💚🧡🧡🧡🧡🧡🧡🧡❣❣❣❣❣❣ A lot of love you sir and huge respect and blessing with you
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Physics wallah power
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Sir aap bohat aage jayiee dill se dua hae
Chle gaye...
saddi chaldi aa duniya jalddi aa
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Now see the climax
Sir I am very thankful ki aap mere Teacher ho
I love that Sir
Sir you are doing a very good job by helping everyone and I wish may god always keep you happy and hit like whoever agrees with me
Thanks sir 🙏🙏🙏🙏
Sir your lectures help me a lot thanks
Advanced congratulations for 2 million subscribers
Daily hunt featured you .So happy to see that you're the 101 unicorn...and to know your 40 cr sacrifice for us.
You make physics sink inside us . I can feel physics watching you . God bless everyone
Wow! Sir i am so glad
Best teacher to study concept of physics
I think my teacher sees your videos to teach us .
Thank u sir 🙏🙏🙏
thank you so much sir aapki video ka bohat intzaar rahta hai we are only depend for you in physics and chemistry
Very good presentation sir 🙏
Sir makes us understand better with different types of sounds he makes😂😂...jokes aside.. whatever might be my source of study alakh sir's lecture just gives me the satisfaction of finally understanding every topic clearly..thank u sir🙏🙏
Same here.. At last I come here onlyyyy
@@Deepti348 no am also 😂
I watch sir 's lecture evry single day..and the subscribers are increasing at the rate of 0.1 in every 2/3 day
Silvering of one surface is not in mains syllabus
Sir aap ek friend ki tarah padhate ho THANKS SIR🙏🙏❤❤ 😊
thank you sir for this wonderful lecture🥰🥰🥰❤️❤️❤️
ur teaching style is extremely good...last year i have taken coaching from motion intitute kota...and trust me they taught the worst...
Old lectures better than new
Is this syllabus in boards
@@Itz_anshu665 yes this is in current boards syllabus
bhai , sir ki 150 videos of full class 12th , boards 2024 ke liye sufficient h ? Agar mai Ishke baad NCERT ke questions aur last 10 yrs. PYQs kar lunga
@@AnshPathak2005more than sufficient bro
Pr ek baar reference books ke questions dekh lena board level ke
Physics wallah ek nasha hai nasha.....Jo samay samay pe apun ko chahiye hai man😍😍😍😍
Sir without you we are nothing agar ap full 10 chemistry physics upload kar do from dinesh to hame to coaching jane ki jarurat hi nahi ha love from punjab