@@RYZEN5PLAYER 10th me jaa raha hai thoda seriously lo! Padhai likhai karo i.a.s.-y.a.s. bano aur desh ko sambhalo Mai bhi pehle waise hi sochta tha magar abhi 9th me pata chala education kitna important hai. Bas pass hone ka goal mat banao. Agar 100% ka goal rakhoge toh 95% to 100% mil jayenge aur 50% ka goal rakhoge toh jaise taise pass ho jaoge ya shayad nhi bhi aur bas pass hone ka goal rakha toh bhagwaan hi aapko bacha paaye
Newton 5th law state that the exam is directly proportional to fear and stress in mind and inversely proportional to time taken to complete full syllabus in one night 🙃
Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59
PW is the best education platform I have ever seen . I have studied 1 class (7th) in bujus , 2 class (8th and 9th) in vedantu , but I can assure you that there is no other education platform that teaches like PW . I have planned to take upcoming classes subscription in PW by seeing their explanation in TH-cam Exited for 10th class😊
Time Stamp :- Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59
This video introduces the physics of sound waves, including their propagation, classification, and effects on different mediums. It also explains the use of ultrasound technology in various fields, such as medicine and navigation. The video also covers the impact of frequency, intensity, and surface characteristics on sound reflection and reverberation. 00:00 Understanding Mechanical and Non-Mechanical Waves 08:24 Understanding Sound Waves and Propagation 16:47 Understanding Waveforms and Frequencies in Sound 25:15 Understanding Wave Characteristics and Frequency 33:39 Understanding the Impact of Voice Frequency and Intensity on Sound Quality 42:02 Understanding Reflection and Reverberation in Sound 50:27 Understanding the Science of Sound Reflection and Ultrasonic Frequencies 58:50 Applications of Ultrasound Technology in Various Fields
Time Stamp :- Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59 Like please 🙏 😢
Recently I've given my 10th boards and I'm here because class 9th physics is basics of class 11th and I've not studied a single word from this chapter 😭 So ya to all my juniors if you wanna take science please study all chapters properly and try your best to clear your Doubts and ya marks doesn't matter it only matters for Boards so please don't get upset or demotivated if you won't be able to score good marks I myself had scored 75% in 9th but hopefully I'll score farrrrr better in 10th. So ya study hard take care. Okay Guyss so I got 95% in 10th.
Your sacrifices don't go unnoticed Sir. You are making a huge impact on us I couldn't imagine where I were in these vast physics without you Thank you so much sir ❤🙏
Time Stamp :- Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59 Best of luck❤
Smajhna hota to ham school me hi samajh jate but a student wants: No syllabus completion ki jaldi Personal atention A teacher who can understand our feelings A teacher jo doubt puchne se pehle hi samajh jaye PW IS EMOTION❤
Time Stamp :- Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59 😊😊
Time Stamp :- Introduction 00:00 Based on direction of vibrating particles 1:01 Based on medium of propagation 6:13 Sound wave production 9:28 Sound wave propagation 14:45 Sound require medium to travel 18:25 General characteristics of wave 20:23 Speed of sound wave : formula and variation 30:22 Characteristics of sound waves 32:42 Laws of reflection of sound wave 39:07 Echo 43:31 Reverberation and how to reduce it 48:02 Reflection of sound based instrument 50:42 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 Applications 59:30
Best physics teacher ever!! I was listening to you sir and my mom said, "I wish we had a physics teacher like him, it would've been so fun to study physics." Thank you so much sir, you have really made physics easy for me🙏
I watched a video first time on PW and i really like explanation of this ch i dont know about other chapters because i already study those ch by other channels And I also thought that ki mujhe shayad baki ch bhi yhi se pdne chahiye the I will try this in my 10 standard ☺️☺️
Sir u made me love with physics till 8th i felt that I can't handle physics but when i watched your lecture in the beginning of this session....slowly and simultaneously physics was one of my favourite subjects ❤️🔥 i used to watch lectures of yt only but this year i purchased the batch NEEV -2024 and didn't regret at all ❤️❤️ Thankyou PW
3:44 - when the particles are vibrating parallel to the the direction of the wave 4:37 -when the particles are vibrating perpendicular to the direction of wave a wave is a disturbance which uses the medium particles to travel from source to the destination 9:10 -mechanical and not mechanical waves Production- vibrating Propagation- compression and rarefaction Wavelength- distance between 2 crests/troughs frequency- vibrations per second time period- time taken per oscillation amplitude- distance from the mean position
Amplitude. This portion need not be confused by students here. The left right hand gesture made by the instructor here is to depict the magnitude of amplitude and need not be confused ( don't assume it to be wavelength) It is the variation in pressure that he represents... ordinarily the gesture would mean the wavelength ( pl see the propagation of sound wave portion shown here) The graph is time to pressure graph. Also higher amplitude means higher pressure and louder sound. Pressure/loudness does not seem to have anything to do with wavelength, but amplitude
Sir please provide numericals sessions of all previous chapters (motion ,force and laws of motion, gravitation, work energy and power and sound) Sir your all lectures are outstanding and understandable and I wish that you will provide numerical session for us that will also become so much outstanding. Sir please provide numerical session for us many students are waiting for this.♥️
I have never commented on a study realated video before but gotta say i can not be more thankful to sir i was failing physics at the start of this year tried tuitions,every youtube channel but nothing worked but one day i randomly clicked on a PW video from sir and it truly changed the way i looked at this subject and i scored 48/50 in physics and chemistry in half yearlies and it is now easier for me to look forward to my dream of becoming a doctor thank you so much sir .....honestly
Same to me also , I haven't liked physics but after sir's explanation , maths and physics are my favourite subjects and he has also helped me to choose maths stream 😊
Sir but sound can travel through solid liquid and gas so according to law of reflection of sound wave sound get reflected why sound cannot pass through the source of medium ??
Newtons fourth law of motion says that books will remain at rest until and unless an internal or external exam occurs and the turning of pages is directly proportional to the syllabus to be covered and the stress in mind remains constant
You're right that plywood is a medium, and sound waves should travel through it. However, there are a few reasons why sound waves bounce back from plywood: Reflection and Refraction 1. *Reflection*: When sound waves hit a surface like plywood, some of the energy is reflected back. This is because the sound waves encounter a change in medium (from air to plywood) and a portion of the energy is unable to pass through. 2. *Refraction*: The remaining energy is refracted, or bent, as it passes from air into the plywood. However, the plywood's density and composition can cause the sound waves to be scattered or absorbed, rather than transmitted cleanly. Plywood's Properties 1. *Density*: Plywood is a relatively dense material, which makes it more difficult for sound waves to pass through. 2. *Composition*: Plywood is made from layers of wood veneer, which can create a complex internal structure that scatters sound waves. 3. *Surface roughness*: The surface of the plywood can also contribute to sound reflection, as rough surfaces can scatter sound waves in different directions. Energy Absorption 1. *Sound absorption*: Plywood can absorb some of the sound energy, converting it into heat or vibrational energy within the material. 2. *Damping*: The plywood's internal structure and composition can also dampen the sound waves, reducing their amplitude and energy. In summary, when sound hits plywood, a combination of reflection, refraction, scattering, absorption, and damping occurs, causing some of the sound energy to bounce back. I hope this comment will help you
Sir mai ye video raat ke 3 bje dekh Rahi hu or aap itne interesting way main padha rahe ho ki mujhe bilkul neend bhi ni aari h bahot funny or mazedaar way main padhaya aapne or jab mai khud ya teachers se physics padhti hu to itni boring lagti h but Aaj ni lagi. Thank you so much sir🙂
Firstly thank you sir I always take your lectures according to my routine But sir you are not just a teacher for us You are everything in this field Thank sooo much sir 🤝 1:05:34
I enjoyed and learned so much from you , i think you are the best physics teacher 💗💗 you are the best , you clear my whole physics concept in just minutes 🎉🎉🎉❤❤❤❤❤ A great thank you sir ☺️☺️☺️☺️☺️☺️❤❤❤❤❤
Thank you sir for all the lectures. This was definately an amazing journey with you for class 9th (I only studied physics from your lectures) which gave me a keen interest in the world of physics. Till then sir, I hope to study with you in class 10th too! Thank you sir for your hardwork and efforts.
Thankyou sir and all pwians ❤❤ Because I am belong to middle class family so can't afford the coaching fee 😢 I am studying on your free platform and getting good score in my class and I believed on all pwians because in your presence anybody can't fail me😊😊
Happy Teacher's Day sir you helped a lot in physics when I was in my 10th class in 2023 I give my board exam and I am here today 5 September 2024 for wishing you a very happy teacher's day once again thank you rakshak sir 😊🙏🙏💓💓
42:45 , sir ek sansodhan sujhav hai, incident ray, reflected ray and normal, us cardboard pe nahi us sakt smooth plywood be hogi, pin kar dijiyega agar sahi hai to, reply kijiye agar aapko koi sansodhan karna hai is sansodhan me
Thankyou sir mene puri 9th ki physics motion ch se leke sound tak aaphi se padhi hai aur ab meri physics sirf aapki bhajase ho majbook hui hai thankyou sir love you sir 💕💕 😊😊😊😊😊😊
Thankyou soo much PW and Rakshak sir for making my class 9th this easier...... I really not learnt anything from my school but by PW and youtube I completed my class 9th and also I'll study from PW and TH-cam In 10th.....best of luck guyzz for 10th class
Foundation Class 9th Sprint Batch 👉 bit.ly/3VS4OrG
📲PW App Link - bit.ly/YTAI_foundation
🌐PW Website - www.pw.live
Thank you sir ji
NXT LVL⚡☄️💯
Op sir
Sir padav batch video kab start hogi
Sir kya aap sample paper solve kr skte h
🕯️🕯️Manifesting *95+ in all subjects* 🕯️🕯️ for everyone
Same!
Thanks😂
pass hojau bas
@@RYZEN5PLAYER😂
@@RYZEN5PLAYER 10th me jaa raha hai thoda seriously lo!
Padhai likhai karo i.a.s.-y.a.s. bano aur desh ko sambhalo
Mai bhi pehle waise hi sochta tha magar abhi 9th me pata chala education kitna important hai. Bas pass hone ka goal mat banao. Agar 100% ka goal rakhoge toh 95% to 100% mil jayenge aur 50% ka goal rakhoge toh jaise taise pass ho jaoge ya shayad nhi bhi aur bas pass hone ka goal rakha toh bhagwaan hi aapko bacha paaye
Jis ne like kiya vo exam me top kere ga 😅
Mene dislike kia 😅
😂😂😂😂
Thank god kia ma na like nahi kiya 😂😂😂😂😅
Aur jo same class me ho toh? 😂
Aut jis ne ya type Kiya vo exam me niche se top karega 🤣🤣🤣
Newton 5th law state that the exam is directly proportional to fear and stress in mind and inversely proportional to time taken to complete full syllabus in one night 🙃
😂😂
4th law???
Ye badiya tha guru😂😂
@@thetimepassyoutuber2009law of universal gravitation constant
@@miniee.69 ok
Introduction 00:00-1:00
Based on direction of vibrating particles 1:01 - 6:12
Based on medium of propagation 6:13 - 9:27
Sound wave production 9:28 - 14:44
Sound wave propagation 14:45 - 18:24
Sound require medium to travel 18:25 - 20:22
General characteristics of wave 20:23 - 30:21
Speed of sound wave : formula and variation 30:22 - 32:41
Characteristics of sound waves 32:42 - 39:06
Laws of reflection of sound wave 39:07 - 43:30
Echo 43:31-48:01
Reverberation and how to reduce it 48:02 - 50:40
Reflection of sound based instrument 50:41 - 54:49
Audible range 54:50 - 58:09
Ultrasound and its applications 58:10 - 59:29
Applications 59:30 - 1:04:59
@dphverma3060 aapki exams hui kya??
❤
😮😮😮
Copypasta from the description of the lecture 🗿
Hnn
This teacher is why I love PW for any class either 9 or 10.....
Ok why tf you commented
yup
blue hub what do you mean
💯
@@bluehubgaming2958 and wtf u have problem 🥱
PW is the best education platform I have ever seen .
I have studied 1 class (7th) in bujus , 2 class (8th and 9th) in vedantu , but I can assure you that there is no other education platform that teaches like PW .
I have planned to take upcoming classes subscription in PW by seeing their explanation in TH-cam
Exited for 10th class😊
Bro you have written exited instead of excited
Byju is also good according to me
free fire khel aur buisness kar kya nakar giri
@@33-satyamgupta8c8 shi bola bro , business jaisa Paisa aur power kisi job me nhi h
Time Stamp :-
Introduction 00:00-1:00
Based on direction of vibrating particles 1:01 - 6:12
Based on medium of propagation 6:13 - 9:27
Sound wave production 9:28 - 14:44
Sound wave propagation 14:45 - 18:24
Sound require medium to travel 18:25 - 20:22
General characteristics of wave 20:23 - 30:21
Speed of sound wave : formula and variation 30:22 - 32:41
Characteristics of sound waves 32:42 - 39:06
Laws of reflection of sound wave 39:07 - 43:30
Echo 43:31-48:01
Reverberation and how to reduce it 48:02 - 50:40
Reflection of sound based instrument 50:41 - 54:49
Audible range 54:50 - 58:09
Ultrasound and its applications 58:10 - 59:29
Applications 59:30 - 1:04:59
This video introduces the physics of sound waves, including their propagation, classification, and effects on different mediums. It also explains the use of ultrasound technology in various fields, such as medicine and navigation. The video also covers the impact of frequency, intensity, and surface characteristics on sound reflection and reverberation.
00:00
Understanding Mechanical and Non-Mechanical Waves
08:24
Understanding Sound Waves and Propagation
16:47
Understanding Waveforms and Frequencies in Sound
25:15
Understanding Wave Characteristics and Frequency
33:39
Understanding the Impact of Voice Frequency and Intensity on Sound Quality
42:02
Understanding Reflection and Reverberation in Sound
50:27
Understanding the Science of Sound Reflection and Ultrasonic Frequencies
58:50
Applications of Ultrasound Technology in Various Fields
2024 wala attendance here 😂😂😂
Present 😅
ye bakr mat karo padh loo
Aap ko mana raka kab aap pad loo
Present😂🙌
@@Arnav-ns1ypbhai hum log bekar chizz krke bhi pass ho jate he (with good marks) apka tension he app samjho bhaiya💀
Time Stamp :-
Introduction 00:00-1:00
Based on direction of vibrating particles 1:01 - 6:12
Based on medium of propagation 6:13 - 9:27
Sound wave production 9:28 - 14:44
Sound wave propagation 14:45 - 18:24
Sound require medium to travel 18:25 - 20:22
General characteristics of wave 20:23 - 30:21
Speed of sound wave : formula and variation 30:22 - 32:41
Characteristics of sound waves 32:42 - 39:06
Laws of reflection of sound wave 39:07 - 43:30
Echo 43:31-48:01
Reverberation and how to reduce it 48:02 - 50:40
Reflection of sound based instrument 50:41 - 54:49
Audible range 54:50 - 58:09
Ultrasound and its applications 58:10 - 59:29
Applications 59:30 - 1:04:59
Like please 🙏 😢
😅😅😅😊😊😮😮😢😢🎉🎉🎉😂😂😂😂❤❤❤❤❤❤❤❤❤❤
I hoped that all students will get 96%+in 9th and board examination
Thanks
TYSM~
L@@soumya6908
Recently I've given my 10th boards and I'm here because class 9th physics is basics of class 11th and I've not studied a single word from this chapter 😭
So ya to all my juniors if you wanna take science please study all chapters properly and try your best to clear your Doubts and ya marks doesn't matter it only matters for Boards so please don't get upset or demotivated if you won't be able to score good marks I myself had scored 75% in 9th but hopefully I'll score farrrrr better in 10th.
So ya study hard take care.
Okay Guyss so I got 95% in 10th.
Same here .
Mai to AMU entrance ke liye aayi hun😅
Koi baat nhi ❤
Can u tell me if we take science in 11th then is it necessary for the maths basics to be also cleared? 😭
@iamsamridhiiHi
@@Deep_codm hey
Your sacrifices don't go unnoticed Sir.
You are making a huge impact on us
I couldn't imagine where I were in these vast physics without you
Thank you so much sir ❤🙏
Not only you but all the students who want to learn
Dam
59:12 best part 😂 notes bana Raha tha yeh sunkar hassi chut gayi vah sir 😂
Kya funny hai?
Kaun kaun ye video 2024 me dekh rha h ❤
Kyu tujhe like chahiye
Mai
Me
Mai
ha ha mai🎉🎉🎉
44:43 reflection me aayega ‘Jethalal......jethalal.......jethalal...’😂😂
Time Stamp :-
Introduction 00:00-1:00
Based on direction of vibrating particles 1:01 - 6:12
Based on medium of propagation 6:13 - 9:27
Sound wave production 9:28 - 14:44
Sound wave propagation 14:45 - 18:24
Sound require medium to travel 18:25 - 20:22
General characteristics of wave 20:23 - 30:21
Speed of sound wave : formula and variation 30:22 - 32:41
Characteristics of sound waves 32:42 - 39:06
Laws of reflection of sound wave 39:07 - 43:30
Echo 43:31-48:01
Reverberation and how to reduce it 48:02 - 50:40
Reflection of sound based instrument 50:41 - 54:49
Audible range 54:50 - 58:09
Ultrasound and its applications 58:10 - 59:29
Applications 59:30 - 1:04:59
Best of luck❤
Smajhna hota to ham school me hi samajh jate but a student wants:
No syllabus completion ki jaldi
Personal atention
A teacher who can understand our feelings
A teacher jo doubt puchne se pehle hi samajh jaye
PW IS EMOTION❤
YES BRO
PW IS LOVE ❤❤❤❤❤❤❤
Yes bro pw is emotion
I wish after watching this lecture i will score more than 95 %😃
😑
How many do you got
@@samarsaysyouaremf8097 this nigga serious
U can't score 95% after watching only 1 ch 😂
@@swatikumari9396 you are right
The Best Teachers, I'm gonna buy the Next 2023 10th Batch, Hope it comes out soon..🔥
Regards,
Soham
Me too
Same bro
Me too bro
Steroid
Me too
Time Stamp :-
Introduction 00:00-1:00
Based on direction of vibrating particles 1:01 - 6:12
Based on medium of propagation 6:13 - 9:27
Sound wave production 9:28 - 14:44
Sound wave propagation 14:45 - 18:24
Sound require medium to travel 18:25 - 20:22
General characteristics of wave 20:23 - 30:21
Speed of sound wave : formula and variation 30:22 - 32:41
Characteristics of sound waves 32:42 - 39:06
Laws of reflection of sound wave 39:07 - 43:30
Echo 43:31-48:01
Reverberation and how to reduce it 48:02 - 50:40
Reflection of sound based instrument 50:41 - 54:49
Audible range 54:50 - 58:09
Ultrasound and its applications 58:10 - 59:29
Applications 59:30 - 1:04:59
😊😊
1like=95%in boards😂
Nhi aaya to tere ko btata hu bhai 🥲
Bhai khud kar phele
Thankyou sir i was waiting because tomorrow is my exam😊😊😊
@@roshsinghrajput nice videos 🥺🥺bro❤️❤️ subscribe to his channel 🤞🏻🤞🏻🤞🏻
Same bhai
Literally me also
Me also
Aaj Mera science ka hai
Section 2023-2024 vale attendance lgao
I love how he teaches with all kinds of sounds from his examples
Indeed
Gagan bhai aaur ho gaya final paper mera kal hae
Mera bhi
Write bro❤
@@janviverma1239❤❤
Time Stamp :-
Introduction 00:00
Based on direction of vibrating particles 1:01
Based on medium of propagation 6:13
Sound wave production 9:28
Sound wave propagation 14:45
Sound require medium to travel 18:25
General characteristics of wave 20:23
Speed of sound wave : formula and variation 30:22
Characteristics of sound waves 32:42
Laws of reflection of sound wave 39:07
Echo 43:31
Reverberation and how to reduce it 48:02
Reflection of sound based instrument 50:42
Audible range 54:50 - 58:09
Ultrasound and its applications 58:10
Applications 59:30
😂
what@@Creator-Your-Type
You made physics interesting and understandable sir 👨🏫😄
Best physics teacher ever!! I was listening to you sir and my mom said, "I wish we had a physics teacher like him, it would've been so fun to study physics." Thank you so much sir, you have really made physics easy for me🙏
😮
Physics is easy 😅😅😅😅so tell me what are integrals in physics 😢😂
Rajwant sir be like😢😢
😮😮😮
I watched a video first time on PW and i really like explanation of this ch i dont know about other chapters because i already study those ch by other channels
And I also thought that ki mujhe shayad baki ch bhi yhi se pdne chahiye the
I will try this in my 10 standard ☺️☺️
Thank you Rakshak Sir, you made physics so fun !
Sir u made me love with physics till 8th i felt that I can't handle physics but when i watched your lecture in the beginning of this session....slowly and simultaneously physics was one of my favourite subjects ❤️🔥 i used to watch lectures of yt only but this year i purchased the batch NEEV -2024 and didn't regret at all ❤️❤️
Thankyou PW
Ohh you are good in physics
Then can I ask a question ❓❓
@@PiyushKumar-nl2si yupppp
@@aayana13_4 what is formula of gravitation acceleration when we go to h hieght ❓❓
Your chuche bahut Accha hai
Thank you sooooooo much sir!! You are one of the best teacher!!!!!!! ❣️❣️
It is helping me a lot in my revision!❤️
@@singhdigvijay1975 wah beta kuch padh liya karo nahi to fir fail ho jaoge 🤣
@@Mysticshubh exactly 😂😂
@@user-px6td3jz7e 😅 ✋
tumlogo ne revision bhi start kar liya 😢
@@singhdigvijay1975 sharm kar bhai ladka hai wo 🗿🗿
I haven't liked physics but after sir's explanation , maths and physics are my favourite subjects😊 . So i think i should choose maths stream
Will get to know after 10th with maths (standard not basic)
I also
Aa jaa bhai tu bhi aa jaa maths me. Mera bhi 10th tak maths me bahut interest tha isliye maths stream le li and maths hamare le rha h
@@ambujpandey419same 😅😅
@ambujpandey419 😂😂😂😂😂😂😂 baat to sahi hai 😢😢😢😂😂😂 yaar
3:44 - when the particles are vibrating parallel to the the direction of the wave
4:37 -when the particles are vibrating perpendicular to the direction of wave
a wave is a disturbance which uses the medium particles to travel from source to the destination
9:10 -mechanical and not mechanical waves
Production- vibrating
Propagation- compression and rarefaction
Wavelength- distance between 2 crests/troughs
frequency- vibrations per second
time period- time taken per oscillation
amplitude- distance from the mean position
Sir washroom me baat Karne wale like karenge😂
Exam wale bhi
40:57
Thank you so much for being with me in my whole 9th class journey
Thank you so much for being with me in my whole 9th class journey😀
Hlo ur in class 9.
And ur youtuber
Rashak sir se tum bhi padhte ho
Rakshak sir thanks a lot
U are the only one who can made me clear in class 9 physics may lord give u good health ❤❤❤
Ek mai stupid night owl jiska kal exam English ka h wo complete ho chuka h to raat ke 2 : 37 me mai bore aur tensed hoke physics padh ri hu 😭 😢
Amplitude.
This portion need not be confused by students here.
The left right hand gesture made by the instructor here is to depict the magnitude of amplitude and need not be confused ( don't assume it to be wavelength)
It is the variation in pressure that he represents... ordinarily the gesture would mean the wavelength ( pl see the propagation of sound wave portion shown here)
The graph is time to pressure graph. Also higher amplitude means higher pressure and louder sound. Pressure/loudness does not seem to have anything to do with wavelength, but amplitude
😊😊😊😊 1:05:39 bahut acha
37:38 the unit of intensity is watt/metre^2 and decibals is the si unit of loudness
Sir glt padha rhe h kya?
Ha to Bhai Energy/Time hota hai Power isiliye SI Unit Watt hai. Aur Area ka hota hai m². Isiliye chahe Joule/secm² ya Watt/m² likho baat to Ek hi hai.
I know you guys have exam tomorrow or within one week all the best may all bulls get 90 percent😂😂😂
Sir please provide numericals sessions of all previous chapters (motion ,force and laws of motion, gravitation, work energy and power and sound) Sir your all lectures are outstanding and understandable and I wish that you will provide numerical session for us that will also become so much outstanding.
Sir please provide numerical session for us many students are waiting for this.♥️
Yess
If you get from any other source help me too please
Final exam walo
Attendence here
Kyu? Tu mithai baatega? 😒😒
☠️
@@Hearst7072 baatunga lekin tere baap ke shhadi me
@@AshaKumari-m1q1i hlo jiiii
Sir...
Types of wave:--
• Mechanical wave
• Electromagnetic wave
Hard Work always pays 💯💯
Smart work?
I have never commented on a study realated video before but gotta say i can not be more thankful to sir i was failing physics at the start of this year tried tuitions,every youtube channel but nothing worked but one day i randomly clicked on a PW video from sir and it truly changed the way i looked at this subject and i scored 48/50 in physics and chemistry in half yearlies and it is now easier for me to look forward to my dream of becoming a doctor thank you so much sir .....honestly
Same to me also , I haven't liked physics but after sir's explanation , maths and physics are my favourite subjects and he has also helped me to choose maths stream 😊
@@LGYASH19❤
Tabhi tumne itna bada para likh diya 😂
Really helped clear the concepts. Thank you so much!!
wakata
Thanks you so much for this wonderful session 😢😊
Bhai yaar editing aur cubing chhod ke padh rahe ho😮
Sir but sound can travel through solid liquid and gas so according to law of reflection of sound wave sound get reflected why sound cannot pass through the source of medium ??
Can u repeat ur question?Not Able To Understand
This sprint series helped me a lot sir . Thanku for teaching us 💗💗
Newtons fourth law of motion says that books will remain at rest until and unless an internal or external exam occurs and the turning of pages is directly proportional to the syllabus to be covered and the stress in mind remains constant
Gravitational law kidar gaya 😂
Cause you don't respect your parents money
😂😂
Sir, sound when hits the plywood , why it is comingback ? Plywood is also a medium and it should travel throught it🤔🤔🤔??? Please explain sir
You're right that plywood is a medium, and sound waves should travel through it. However, there are a few reasons why sound waves bounce back from plywood:
Reflection and Refraction
1. *Reflection*: When sound waves hit a surface like plywood, some of the energy is reflected back. This is because the sound waves encounter a change in medium (from air to plywood) and a portion of the energy is unable to pass through.
2. *Refraction*: The remaining energy is refracted, or bent, as it passes from air into the plywood. However, the plywood's density and composition can cause the sound waves to be scattered or absorbed, rather than transmitted cleanly.
Plywood's Properties
1. *Density*: Plywood is a relatively dense material, which makes it more difficult for sound waves to pass through.
2. *Composition*: Plywood is made from layers of wood veneer, which can create a complex internal structure that scatters sound waves.
3. *Surface roughness*: The surface of the plywood can also contribute to sound reflection, as rough surfaces can scatter sound waves in different directions.
Energy Absorption
1. *Sound absorption*: Plywood can absorb some of the sound energy, converting it into heat or vibrational energy within the material.
2. *Damping*: The plywood's internal structure and composition can also dampen the sound waves, reducing their amplitude and energy.
In summary, when sound hits plywood, a combination of reflection, refraction, scattering, absorption, and damping occurs, causing some of the sound energy to bounce back.
I hope this comment will help you
A great teacher on TH-cam hat's off to you sir 💜
Yupppp.... 💜💜💜💜
Hello
@danchiiiefitwithshefali9699
This man make physics really understandable to me!!! 👍💗
Tumhara exam hai 2 ya 3 din mei
@@Anubhabbbnhi broo😂
33:28 sir- female voice- karkash
male voice bhi bata dijiye sir, sweet hoti hai kya?
(not to troll, sir is great anyways)
Sir physics ke chapters khatam ho gaye h plz ek video important terms pr bhi daal do jo exam me help kare humari 💫
Sir mai ye video raat ke 3 bje dekh Rahi hu or aap itne interesting way main padha rahe ho ki mujhe bilkul neend bhi ni aari h bahot funny or mazedaar way main padhaya aapne or jab mai khud ya teachers se physics padhti hu to itni boring lagti h but Aaj ni lagi.
Thank you so much sir🙂
I love the way fo teaching and treat pw channel as a family 😇
I hope you will also teach us in our 10th class 😍
Really, jitna bolo uthna kam h. You all are unbelievable. Thans for your support . I will be forever grateful to you. 💖💖💖
Firstly thank you sir
I always take your lectures according to my routine
But sir you are not just a teacher for us
You are everything in this field
Thank sooo much sir 🤝 1:05:34
I was waiting a lot for this lecture.... And he presented it so awesome. Loved it.... Literally great!!
I enjoyed and learned so much from you , i think you are the best physics teacher 💗💗 you are the best , you clear my whole physics concept in just minutes 🎉🎉🎉❤❤❤❤❤
A great thank you sir ☺️☺️☺️☺️☺️☺️❤❤❤❤❤
44:45 this sound was personal 😂😂
Everything is temporary but that schl wali mdm is permanent 😂👉🏻👈🏻
Thank you sir for all the lectures. This was definately an amazing journey with you for class 9th (I only studied physics from your lectures) which gave me a keen interest in the world of physics.
Till then sir, I hope to study with you in class 10th too!
Thank you sir for your hardwork and efforts.
Samee heree btw can we be friends??
@@idontknow-fu7bewe be?
Ham toh bathroom me camping karte hai 😂😂 40:14
Thank you sir😇😇👍
Your revision series are Awesome👏
Best physics teacher ever! . Thank you so much sir, you have really made physics easy for me🙏. I got 98 % in my physics exam.
44:04 TEACHER ✅
VOICE ARTIST ✅✅
You 🤡🤡
Mother father 💀🗿🗿
Physics is crazy 😃
Thankyou sir and all pwians ❤❤
Because I am belong to middle class family so can't afford the coaching fee 😢 I am studying on your free platform and getting good score in my class and I believed on all pwians because in your presence anybody can't fail me😊😊
Happy Teacher's Day sir you helped a lot in physics when I was in my 10th class in 2023 I give my board exam and I am here today 5 September 2024 for wishing you a very happy teacher's day once again thank you rakshak sir 😊🙏🙏💓💓
Kohli ka birthday
Thank you sir... I thankfull to you with my whole heart ❤️...you are the no. 1 teacher
Of physics in this universe....
Thank you sir. I have studied my whole 9th class by your videos ❤ and a very happy new year please give heart(❤️)
42:45 , sir ek sansodhan sujhav hai, incident ray, reflected ray and normal, us cardboard pe nahi us sakt smooth plywood be hogi, pin kar dijiyega agar sahi hai to, reply kijiye agar aapko koi sansodhan karna hai is sansodhan me
Who are watching in 2024 😅😅 tell in coments 😂😂😂
Sir Maja agya pad ke
Now i realize that , how physics and physcwallah is the best ❤👌🏻👍🏻
Thankyou sir mene puri 9th ki physics motion ch se leke sound tak aaphi se padhi hai aur ab meri physics sirf aapki bhajase ho majbook hui hai thankyou sir love you sir 💕💕 😊😊😊😊😊😊
very amazing sir your are best teacher of physics 😇😇😇
38:55 sir decibel loudness ka hota h, intensity ka watt/m^2
Class 9th ke kin kin students ne class 10th padhna start kr diya h 😊😊
Exams ke baad se padhai suru
Ya
33:31 sir didn't even hesitate💀
Pt-1. =15/40 pass
Half yearly =30/80 pass
Pt-2 =14/40 pass
final exam ??/80
In science allover exam
It hits different while watching it 1hr before exam..
bhai us moment ho gya
My final exam are done 😊but I"am here to like this video😍
Thankyou soo much PW and Rakshak sir for making my class 9th this easier...... I really not learnt anything from my school but by PW and youtube I completed my class 9th and also I'll study from PW and TH-cam In 10th.....best of luck guyzz for 10th class
the teacher who give us feel of physics ⚛
Thank you Sir 😊 You are really our rakshak .🙂🙃
Thanku soo muchh sir for this masterpiece!!🥺❤️ you really make me from zero to hero inn 1 hourr!!🥺❤️ again thnkuu🥺❤️
Much better than other education platforms
But....
Respect 🙏 for all teachers
But respect all teachers
SIR THIS SPRINT SERIES IS HELPING US VERY MUCH ....
THANKS, PW
THANKS, ALAKH SIR
Thhhhhaaaaaannnnnkkkkkkk yooooooouuuuuuuu siiiiiiiirrrrrrrrrr❤🧡💛💚💙💜🤎🖤❤🧡💛💚💙💜🤎🖤❤🧡💛💚💙💜🤎🖤❤🧡💛💚💙💜🤎🖤
Everything is temporary, But Sir ka explanation is Permanent🥵🔥
😵
🌞🌞🌞🌞
Rakshak sir aap isi tarah humari physics se raksha karte rahana 😂
Sir agr cricket stadium me bole to
Vo bhi to 17.2 se jyada hota hai na
To hum cricket stadium me bole to
Hmari awaj bhi repite hogi
🤔🤔🤔🤔🤔🤔
Hii
Kal ka exam ka liya all the best 😂😂😂 bhai jo 1 din exam pehle padha Raha uunko mera salitua ha
💪💪 thanku thanku mere shero😂
Who is here from 10th class to clear their concept in light