Thermal Properties Of Matter 06 | Heat Transfer : RADIATION : Black Body and Krichoff's Law JEE/NEET

[@PhysicsWallah]

Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App. Download the App from Google Playstore ( bit.ly/2SHIPW6 ) Physicswallah Instagram Handle : instagram.com/physicswallah/ Physicswallah Facebook Page: facebook.com/physicswallah Physicswallah Twitter Account : twitter.com/PhysicswallahAP?s=20 Physicswallah App on Google Play Store : bit.ly/2SHIPW6 Physicswallah Website: physicswallahalakhpandey.com/ 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 KZbin) 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. 11 Physics chapter 11 || Thermal Properties Of Matter 01 || Heat and Temperature |Temperature Scales kzbin.info/www/bejne/sKGyfGetn6hnnpY Thermal Properties Of Matter 02 || Thermal Expansion -All Concepts for JEE MAINS/ NEET kzbin.info/www/bejne/b6GuiZaCoK6Ai9k Thermal Properties Of Matter 03 || Calorimetry - Compilation of Old Videos || kzbin.info/www/bejne/imi1oWSin7Cpo7s Thermal Properties Of Matter 04 || Heat Transfer : Conduction part 1 | Heat Transfer JEE MAINS /NEET kzbin.info/www/bejne/l6bapZeqp86sitU Thermal Properties Of Matter 05 | Heat Transfer : Conduction part 2 Equivalent Thermal Conductivity kzbin.info/www/bejne/jXq6cmB4jstsgLs Thermal Properties Of Matter 06 | Heat Transfer : RADIATION : Black Body and Krichoff's Law JEE/NEET kzbin.info/www/bejne/m2mUoaKCpa6tfqM Thermal Properties Of Matter 07 | Heat Transfer : Radiation 02 | Wiens Law n Stefan's- Boltzmann Law kzbin.info/www/bejne/b3fRqneBbt2EoKc Thermal Properties Of Matter 08 | Radiation 03 | Newtons Law Of Cooling JEE MAINS/NEET kzbin.info/www/bejne/gJXbY3-AebeWgJY

[@shubhamkundu2797]

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[@BhavGiriVines]

Sir, on with support you in your journey on my birthday. Ok... Please watch my channel

[@nikhila562]

Sir can u do numericals too

[@nikhila562]

It will be helpful for us

[@AlkaSharma-xr9vu]

1 ques. sir. You said the wall behind absorbs all color other than red, so it will reflect the red color. But after sometime in Kirchoff's law, you said the wall behind will absorb red color the most and hence it will emit the same color more. It's a bit confusing.

[@fazilah_mir._]

32:06....God the way he said sorry❤..... There was a teacher in our coaching..his phone used to rang in the classroom atleast 20 times nearly everyday... But he never put it on silent mode... Neither receiving nor rejecting... It was so disturbing.... Whole class wanted to throw his phone out of the window... But god we were helpless🙄🥴🥴 And this man is teaching free... Still with such a dedication... Hats off... There can't be another alakh pandey in whole universe... ❤... More power to you sir

[@sohamchoulwar1700]

True....

[@RiyaaaSharma-q7b]

And then there is teacher in our coaching whose phone rings so much and he picks it up and leaves the class

[@aribaAnsari0101]

which coaching you are in?

[@fazilah_mir._]

@@aribaAnsari0101 I am currently doing MBBS from GMC... 1 year left to graduate.

[@iamnoob7534]

Cool man ​@@fazilah_mir._

[@abhaypratapsinghchauhan404]

""Physicswallah is directly proportional to feel of physics"" where ""chuha khana band kar do ""remains constant.😂😂😂

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😂😂

[@aarsiprasad5342]

Damn lame

[@sravanthch2879]

@@aarsiprasad5342 Ikr but still 😂

[@aakankshajain8988]

Nice ❣❣❣

[@shivanitiwari8698]

😂😂😂

[@henajabeen5608]

Timestamps Radiation - 1:25 Theory of Exchange - 4:35 Emissive Power - 11:44 Absorptive Power - 17:47 Black Body - 24:08 Secondary Black Body Definition - 36:15 Black Body examples - 43:11 Kirchhoff's Law - 46:53 Proof of Thought Experiment - 50:20 JEE 2003 Qn - 59:00

[@jjjcguj9825]

Thanku

[@hitman-dt2ey]

Bhai yaar kitni baar thank u khu tuze mera dil jeet liya tune maine tera comment 3 videos mak dekha iss playlist ke usse bhot madad hoti hai dil se thank u 🥺

[@SaurabhPrajapati-hz5ek]

Bhai kaise ye time line comment me paste karte ho

[@henajabeen5608]

@@SaurabhPrajapati-hz5ek You only have to type in the Numbers with colon(:)

[@gauriiarora66]

​@@henajabeen5608bhai ab toh option bhi age timestamp ki

[@saatwiiksrivastava5549]

41:05 I'm watching this in 12th and when he says "Kirchhoff's law" I'm like "abey yeh phir se aa gaya"

[@ranjan.zahreela]

Lmao you studying thermal after class 12th

[@saatwiiksrivastava5549]

@@ranjan.zahreela Revision bro........revision

[@ranjan.zahreela]

@@saatwiiksrivastava5549 oh!

[@cvzheroic]

@@saatwiiksrivastava5549 same😂

[@atharvaambekar6919]

@@ranjan.zahreela me 🙋🙋😅

[@anirbanadak633]

Batch pe enroll hone ke bad bhi , Alakh sir is best for fell the Physics.

[@uniquefactshindi6554]

yeah bro😃😉

[@ossumindia4995]

Obviously🌝

[@afridajinnat5408]

haan yar

[@12_xi_a1akshatabhishek8]

Radiation - 1:25 Theory of Exchange - 4:35 Emissive Power - 11:44 Absorptive Power - 17:47 Black Body - 24:08 Secondary Black Body Definition - 36:15 Black Body examples - 43:11 Kirchhoff's Law - 46:53 Proof of Thought Experiment - 50:20 JEE 2003 Qn - 59:00

[@soumyaranjansahoo7310]

Thank u bhai

[@donevyshaali8665]

Thank u

[@iqrarahmad-v6v]

how are you my bro

[@iamgroot2810]

Sir, I recommend your videos to all my friends.

[@mokshgupta6110]

Me too

[@shatakshisharma5240]

Abh to btane ki zarurat hi nhi hai, sbko pta hai sir ka

[@travelwithmeeee5812]

@@shatakshisharma5240 yes bro

[@ashishkmittal556]

Me also

[@tenzindorjee7689]

Me too among tibetans

[@subhayannag7949]

Best teacher in KZbin history physics wallah - alakh pandey

[@adityaprakash8217]

Abhi aap Kaha pe ho Bhai..

[@rishabhsahu6211]

Bhai selection ho gya tumhara

[@saimaanasa4129]

Best ever lecture for Black body concept that can be found in youtube............... Alakh sir se acha yeh concept ko koi bhi nahi pada sakthe hai........ Colour of black body pe is se jyada explaination kahi pe bhi nahi milega

[@maggiesinging768]

It's been more than 3 years since this video is uploaded but I'm still watching! It's really helpful, a student can study without any coaching by only physics wallah channel for his/her jee exam. Sir is really an amazing teacher, I'm a student of aakash inst but i study more here than in my coaching cuz I've missed so many classes of my coaching and I always try to watch the videos of sir before my physics/chemistry classes so that I can connect so much easily and then I perform better. Thankyou sir! :)

[@Xavier-wg5rv]

If You Are Still Watching One Video From 3 Years,Than You Need Help. *CALL 911*

[@maggiesinging768]

@@Xavier-wg5rv you first need to correct than to then, first help yourself and then help others. And coincidentally I gave the example alo see wow!

[@futureprimeminister1225]

@@maggiesinging768majak samajh nahi ata kya

[@maggiesinging768]

@@futureprimeminister1225 tujhse poochha kya be

[@futureprimeminister1225]

@@maggiesinging768 comment section tera bap ka nahi hai Sach bat agar hazam nahi hoti to youtube delete kar beta

[@shivamtripathi5764]

Kaun kaun chaheta hai ki sir ke 5 M subscriber jaldi se ho jaye

[@nishansinghrai1040]

Are bhai kaisi batten karte ho alakh sur ko koi rok sakta hai

[@anilpatelkapdewale8151]

Sir ke ek nahee 10 million subscriber honge agale 6 months mein

[@crazyclips2908]

Baseq

[@shivamtripathi5764]

@Shyamala Sundari ya

[@kismatsubedi7983]

I want

[@crustycrab87]

I felt confident when I discovered I knew half of this already.. Black bodies etc., and when Sir discussed red-shifting and blue-shifting, I got super-excited! Astronomy really fascinates me!

[@rainyranjan7223]

Yes brother

[@deepaklather8487]

Better than any coaching . At least mine.

[@itstodfod8909]

49:14 Red wall good reflector h red colour ki i.e. bad absorber of red i.e. bad emitter of red

[@ashishgupta3538]

yes u r absolutetly right

[@rakshityadav5895]

i-was-confused-in-it

[@itstodfod8909]

@@rakshityadav5895 Glad that i helped. Sir kayi baar galti kr dete h in purani videos. Comment section check kr lena chahiye ek baar

[@rakshityadav5895]

@@itstodfod8909 thanks

[@anjali3106]

I jst confused here and I scroll through comments ...

[@rudrendubasu7448]

So in life try to become an emitter rather than a reflector

[@karthikchowdary4184]

Bro u can only emit when u can absorb.u cannot emit without fuel i.e when u recieve good from others theu can emit good to others

[@rishabrebala5]

in order to emit you need to absorb sufficiently

[@saarthaktyagi7909]

very smart people out there.sarcasm intended

[@informatives7035]

emission re intially reflector

[@Ur-238]

@@karthikchowdary4184 Itna deep chowdary bhai? who hurt you bro

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Wow the only educator of jee and neet with 4.13 million subscribers hats off 👏 🙌 👌

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5.56 million😀

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5.66 💥💥

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5.80 m now

[@deshbandhumishra2287]

Now 6million edited: sorry 6.6 million

[@davinderchoudhary9447]

6.16 million subscribers

[@Abdullah_Riyaz]

31:58 best thing about this great man is his humbleness even after his popularity and love from everyone

[@RachanaAgarwal-t1e]

Watched this lecture twice for the FEEL OF PHYSICS and teachers dont even bother to teach these topics , shows our exam oriented education system Best lecture ever found on internet on heat radiation 👍👍👍👍🙏🙏

[@devvratverma6730]

Right

[@sci-fifacts1817]

42:58 Astronomy 😍🥺Thanks sir. I love astronomy

[@Yash.the.seeker]

bro this not astronomy this is our classical physics if you really want to learn it you should start it with concepts of quantum physics like general theory of relativity,big bang and basic knowledge of celestial objects like black hole,worm hole,red dwarfs,white dwarfs, elementry particals and all that stuff these things are really intresting

[@ayushdas3003]

i too

[@metawhirl4609]

@@Yash.the.seeker quantum physics or mechanics is a different realm and astronomy was a science of observation. In QP we study fundamental things. Quantum mechanics is used to explain it not meaning that it was QP And Sir einstein disprove quantum physics he thought that it was waste

[@youtubeshortsviral1361]

@IJSO ASPIRANT Astronomy olymiad kya hota hai? Explain pls

[@sanjeet.kushwaha]

I am also bro

[@AbhisekMishra]

Finally I got the concept of black body. I have searched about colour of black body even Google can't clear my concept but alakh sir did it.Sir you deserve BHARAT RATNA I think if you are not in youtube then maybe I never understand the concept of black body

[@kamaljeetkaur7221]

The thing what admired to me of your's sir, that still after beautiful and rich content, you stick to reality..imean confessed the content of jee mains and neet, even other's at short description of topics, considered themselves to the prepration of jee mains/advance..even that's not comparable from class 11 purpose..But at end one thing want to say, thanks alot from core of heart😄

[@mainulshimul2720]

i am not Indian but still got a lot of help...Love from bangladesh

[@latif.khalid]

Education have no boundaries my friend

[@itachu.]

@@latif.khalid true

[@neelimatiwari2210]

40:42 Got the topic fully, your videos are very helpful and superior ♥️ no matter what the quality of video is teaching skill is important that you have very well

[@doctorwithdreams4037]

Har din 5k+ subscription bar rahe hain...Waaah Sirji..😇😎😎😎😍

[@atharvpatil114]

4m

[@doctorwithdreams4037]

@@atharvpatil114 bcs of sir, I got admission in a Government MEDICAL college this yr. He is ❤

[@atharvpatil114]

@@doctorwithdreams4037 wow awesome 🔥

[@RichardJones-qu8xz]

@@doctorwithdreams4037 really !! can you tell more useful things so that we non institutes students can feel happy. my confidence has increased now . *ME JEE ADVANCED 2022 PHODUNGA !!*

[@vishallodhi7096]

@@RichardJones-qu8xz bro me also

[@zaidmansoori7887]

Sir you are a gift of GOD ❤️❤️❤️

[@prabalparashar5410]

Too much bro ..😂

[@songragpathak451]

true

[@Infinity_G]

agreed🤣

[@swetadwivedi3826]

Correct dood😀😀😀😀

[@swetadwivedi3826]

Pdhne se hota h ohkk .. plz throw away these type of thing from ur mind

[@aayushikashyap5765]

48:50 sir aap opposite bol rhe hai.... Wall red colour ko sabse Kam absorb krega toh jab usko heat krenge toh sabse Kam red colour ke radiations niklenge

[@unrevealed_7240]

Ya i am also thinking the same.

[@Saumyasingh0001]

Yes sir tell that thing opposite

[@bhatzikra4769]

shut up you all sir reADILLY SAY SORRY

[@aliferousme4095]

@@bhatzikra4769 sir told two contrasting things. We are not blaming sir.

[@aliferousme4095]

Ya 23:44 he told red is reflected.... When he was teaching kirchoffs law he told red is absorbed the most. Y?

[@RakshithaGuranna]

"Feeeel aana chahiye"...hamesha ke liye aata hai sir ji...THE BEST TEACHER EVER

[@Abhishekyadav-rm6iw]

Congratulations PW 8 million family Lots of love from Nepal 🇳🇵💗❤️❤️

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9 million within 2 months

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11.6😂❤❤

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" bb ka mtlv bb ki wines nhi "..nailed it. ..! 😂

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Its vines

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Saumya Kakandwar Wines ??? Vines hota hai

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Saumya Kakandwar WINES😂😂😂.....VINES!!!

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@@thenoblesearch07 😂😂😂😂

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Main nhi hu akela ab IIT crack karna nhi mushkil kyonki mere sath hai physics wallah alakh sir u r great for econemy poor students lage raho God bless u

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Apun ka Mumbai Indians DNM isme pakistan kaha se aa gaya

[@aasthasingh8996]

@@divyam2106 those kinds of people exist everywhere..don't be specific to a single region

[@husandhaliwal1713]

I was thinking... That why sir.. 34:08 ...Saying black sweeter, green... 😁😀 then i stop video and... Consentrate on sweeter.. Then i came to know that its.. Dark green.. 😝😂😂

[@ishakumari9965]

I also did this🤣😂😆😁🤣🤣🤣

[@anu4190]

Yes me too..... 😁😂😝

[@AnkitPandey-qn4bg]

@@ishakumari9965 same here

[@satvikp3186]

OMG ya

[@Lucifer-mu7ob]

*Concentrate ....😂😂

[@sd5117]

48:42 Sir apne kaha ki, peeche ki laal body laal rang ki sabse achi absorber hai. Lekin sir wo to laal rang reflect kar rahi hai. Usne baaki colours absorb kiye kyuki unn colours ke liye uski absorbtive power jyada thi.. aur wo colours absorb ho gaye isiliye reflect nai ho rahe. Sir aapne 22:50 - 23:19 me yahi baat kahi hai. Please clarify, ki sahi kya hai.

[@lipsasahu4446]

You deserve best physic teacher in india .who is watching during lockdown

[@heavenheaven5574]

Me

[@ayushsahu7037]

Actually in world😊

[@kashishoberoi7767]

Me

[@RajKumar-mr6mw]

No interest in physics class 11 but alakh sir physics teaching experience is feeling me physics is so simple

[@dreamchaser1681]

I have one doubt..... Please reply me.....Sir to jee ke level ke question krate hai .....And mai neet preparation kr rahi hu......Self study.....Kya mai sir ko follow krke neet me best score kr skti hu...?

[@dangerdash9584]

very few teachers I appreciate and you are one of those 2 ~-words from your admirer

[@neetaraskar744]

Such a beautiful phenomenon, man that's so cool!?!?!?😯😯😯😯

[@themortalgamer2843]

Could not understand last question 🤔🤔

[@Arpit_mann]

30:18 sir singing nerolac nerolac Watch at normal speed sir is even dancing

[@sumitroy429]

Whoa .. bro, you know that we watch the videos with 2x speed😂😂

[@wave896]

I am able to see this even at 2x speed😒

[@omprakashsenapati5807]

THIS IS THE MINDBLOWING, WANDERFUL ,INTERSTING ,UNBELIVIABLE VIDEO

[@poojapatil1935]

Only one best teacher Jo hama re syllabus and concepts clear krta hai best teacher 👍👍

[@shashiyadav3692]

Sir aap hi ke wajah se mann hota hai physics padhne kaa...Love u sir😊😊

[@Education-ve3dr]

2023 me hun abhi bhi kon kon old lecture dekh rahe ho bolo

[@saihiranmayi5670]

Me

[@The_Styline2910]

Me Or aj exam h

[@Yogesh-wb1ci]

Present

[@Education-ve3dr]

@@The_Styline2910 badiya ji

[@baldevnayak3762]

Me

[@Vidyut_Gore]

I rarely watch Indian science channels, but I'm glad I found yours. Just love how much you enjoy science and how clearly you explain it.

[@Wdakashff]

Sabko pta hai vaise likhne ki jarurat nhi the best teacher in our India for physics fell

[@nimraqamar4554]

Ma sha Allah....sir aap bht zyada accha parhaate h...❤️❤️

[@arpitapaul6353]

Sir I don't have words to praise ur teaching style. I just like it. Thanks sir for clearing my concept.

[@RinkiSingh-rz6nf]

Sir u r the saviour 🥺 .. jha coaching m kuch bhi padha deta h sb ... u r the one who saves our future by providing this conceptual knowledge ... thankyouuuuuu😭

[@sumangandharva7227]

Sir according to kirchhoff law agar red absorber he to woh red hi emit karegi par apne ye bataya tha ki agar silver wire ko hum heat karenge to woh red ho jayegi

[@nepalfromglobal1909]

Brother Its doesnot matter , because silver wire changes into red if we give it heat due do the reflection of the red infra ray light instead it absorbs. Reply if you wonot clear

[@somnathjamadar668]

@Physicswallah sir aap me wo kuch toh baat hai jo alag hai jo learning ko ek alag hi meaning mehasus karvati hai...love alakh sir...you are best of the best teacher of all time !

[@somnathjamadar668]

Yes you said true

[@exosujunct4932]

@@somnathjamadar668 apne comment pe kyun likh raha hai❤️😂

[@somnathjamadar668]

@Raghav Latawa mai isa hi hu

[@mansirai9162]

sir ji, aap kitna accha padhate ho. maza aa jata hai. saare doubts jo the crystal clear ho jate hai. aur concept bohot strong ho jata hai. thank you.

[@RelaxHERE-zk8ts]

SIR I WANT TO INVITE U TO MY SCHOOL FOR MOTIVATING STUDENTS AND MAKING THEM FEEL PHYSICS

[@askask4257]

tumare school ki physics faculty gussa ho jayegi 😂😂

[@yashmal1k]

school mein physics? it's like "jail mein Shahi Paneer".

[@devasyesachdeva5453]

@@askask4257 lol

[@shrutibanerjee51]

@@yashmal1k kyu bhai

[@ishasaraf7496]

@@askask4257 bacche kahan se aa jate hain yahan 😂😂😂😂😂

[@anujupadhyay7210]

37:20 totally unexpected 😂

[@cook.createnchill8470]

35:07 loved that laughter💝😘

[@niyatimishra4791]

Best teacher, guide, friend and motivator available on youtube... love you sir... Remain happy always..

[@abdulbaqi9617]

Yeah

[@dhruvbansal6009]

I love you

[@poetryiscodingdecoding7965]

Sir...aapse zyada easy and interestingly kaun padha sakta hai... Aap jaise teachers rhen ...toh INDIA se bhi EINSTEIN zarur ...ek nhi bahot banenge... Cause you go with concepts ..doubts... knowledge.. And not just...ki rat lo for competition... Love you sir 1/0

[@pramodkukade9728]

Very conceptual video bade bhai

[@indiras2572]

Sir aapne concept ko ekdam halwa bana diya.....BEST LECTURE ....sab kuch samaj aaya

[@RajTiwari-op9jm]

23:49-red ke liye absorbtive power bahut kam.......49:00-red ke liye absorbtive power bahut jada so red ke liye emmisive power jada

[@rahulbhimakari5584]

Pehli baar jo kaha tha o sahi tha doosre baar galti se mistake ho gayi ... Was finding this comment...good observation

[@chandravanshi7185]

@@rahulbhimakari5584 tb bhi ye dusre colours ko to absorb krke emit krdega to wo red colour pr dominant nhi honge ky? Sir ne phli baar confuse kr dia

[@rahulbhimakari5584]

@@chandravanshi7185 nah ... 2nd case red absorb nhi kiya jaara hai wall se .. uska matlab o red color ko reflect Karra hai .. emit nahi

[@chandravanshi7185]

@@rahulbhimakari5584 hn to red ko chod kr dusre colours ko absorb kr rha hai na to unko emit bhi to krage To emission or reflection dono hogi ek hi time pr to colour red hi kyu aya ? Ye kah raha tha ma

[@chandravanshi7185]

@@rahulbhimakari5584 hmari taraf to emitted rays bhi ayegi or reflected rays bhi ayegi Reflect me red colour hoga Emit me red ko chod kr sare colours honge To ek tarah se ham sabhi colour ko hi dekh rhe honge pr result red hi kyu dikhayi pad rha ? Ya to ye law hoga ki reflection rays are more dominant then emission rays What you think?

[@roushansingh7884]

Sir kya feel diye ho sir! Thank you.. a 2023 aspirant!

[@mrniraj010]

If "hello bacho" at the beginning & "padhai karte rahe all the very best" at the end remains constant then alakh sir is directly proportional to the clearity of concepts.

[@crazymindset148]

sir aapka telegram channel ni h kya ??? you r a very good teacher 👍

[@sonajain8820]

Sir hum up valle.bhut lucky h kyuki aap jesa ek diamond humare up mae hae ..... Really feeling happy to say that we r from up ......

[@daughter_of_king3251]

ham UP wale h jaha jate h cha jate h..............

[@Vishwajeet1.]

@@daughter_of_king3251 right

[@sonajain8820]

@Satwik Tripathi nyc...

[@sonajain8820]

@@daughter_of_king3251 yup....

[@khushiyadav5534]

Subh ho ya Shaam..........duniya hum UP walo ke naam ...............i m very lucky to be the student of ALAKH SIR.................bss sir meri baat nhi sunn rahe h ki logs pe video bnna de..........but i m waiting until he listens me...........

[@samarthkalshetti8228]

More than 99% of the students don't share the video to their friends 😂

[@nishantchaudhary5212]

Yaa

[@himavarsha5b870]

yeah exactly...

[@RichardJones-qu8xz]

yeah....and why even should we ?? they go to institutes and don't tell much about the teachers , test series and evrything. they just tell those things which everyone can tell and most of us know. why should we tell them about physicswallah ?? plus this is my fake account so no one gets to know about this comment . hahaha

[@youtoo580]

😅😂😂

[@adityaprakash8217]

@@RichardJones-qu8xz boHot tez ho rahe ho😂😏

[@subhamghosh9292]

Sir I have a question . Btw I am a big fan of yours , I'm studying bsc physics and still I regularly watch your video , to clear my concept . In this video at 23:23 you are saying that , the wall looks red cause , its absorptive power for red light is less and for other lights are high , that is why it is reflecting red and we are seeing the wall red . But in this video at 48:36 you are saying that according to Kirchoff's law emissive power is proportional to absorptive power and for the red wall absorptive power is high for red light and emissive power is also high for red light , that is why we are seeing the wall red . Both the statements contradict each other . Could you please take out some of your valuable time and explain what is actually happening to this wall ? Love you sir .

[@Naughtious_maximus]

sir galat bol diye the

[@Innama786]

Sir ne emit Krna bola reflect karna thodi bola hai reflection and emission dono alag chize hai

[@GulnawazNeetaspirant]

I love u sir concept clear came from class to understand the concept 😊😊😊

[@ramsah3473]

We can see black body's colour ,not because of reflection but because of emission from surface of that body. Yeh wala concept achha laga sir..

[@nakulgavhane2604]

Who else thought that Sir is wearing a black Sweatshirt before he told that he's actually wearing a green one 😂? 👇Do mention....

[@debashritajaiswal2415]

I came here searching for this comment only 😂😂

[@nakulgavhane2604]

@@debashritajaiswal2415 😂

[@debashritajaiswal2415]

@@nakulgavhane2604 😅😅

[@shreysrivastav3841]

Brightness Inc karo green ho jayega

[@aakankshajain8988]

Jiii😁😁

[@vann22eww]

45:00 sir u said black body has 0 reflection.. Then how can it reflect as u show?

[@bhavyanayak4342]

It is not an ideal black body.. we are trying to prepare a black body there. So, some small amount of reflection is possible bcz it is not an ideal one.

[@suyashikesarwani4256]

Alakh sir is literally our real life Jeetu Bhaiya. Physics ki feel aa jaati h sir ki wajah.

[@jitendrasingh-si1iu]

Best physics teacher of India 🙏🙏🙏

[@iitmotivation4370]

How can a topic be complex if Alakh sir is teaching it ...🙂🙂

[@devvratverma6730]

SAME

[@diyaagrawal5048]

41:31 yes sir toda complex hea but it's okay sb aa raha hea 😊😊😊

[@gouravbathwal402]

Bada mast emission kiya sir ne 28:12 par 😂😂😂...sari waves nikal di 😂🧡

[@trendonor]

41:27 Sir sab samajh aa raha hai waise complex ho raha ha but feeling simple in the way you are teaching

[@melosachin]

You tube par pehli bar mujhe sacchi bat sikhne ko mili h wo bhi free me thank you sir you made up my concept in physics and prepare for iit jee

[@melosachin]

Yes

[@abhay.rijwani]

That line “black body sharma ji ka ladka hai “ was just lit😂😂

[@chetnasingh3065]

these videos will never get old

[@omkarugale1753]

the construction show at nearly 46:30 is actually called as "ferry's black body"

[@animeshmajumdar66]

Really thank you is it also called isothermal enclosure??

[@AamirKhan-vc3wk]

Topers ko koi bhi padha sakta hai par teacher whi hota hai jo ek failer ko bhi toper bna sake sir 12th mai mere 55 marks thhe physics mai but now i feel physics and i esay se exams mai achhe marks he nhi balki physics se love sa ho rha hai mujhe

[@sainandan988]

49:00 sir said before that a colour is observed only when that particular colour is not absorbed but now saying reverse

[@aaqib567]

Absolutely amazing😍😍 alakh sir evergreen🌲🌲🌲

[@SonaliSingh-ml2fc]

seriously sir your teaching technique is so amazing

[@AvinashKumar-bu8st]

Sir 11th kharab jae to 12th mein 90% aa skta hai kya

[@devpandit2997]

Mai bhi yahi question punchna chahta hu sir plzz reply

[@samujwalhazarika277]

😂

[@rishabhsingh9638]

Avinash Kumar ,are bhai 11 and 12 ka sylabus alag hota h aur koi relation bhi nhi h 11 se ,aur. aisi koi baat nahi h ,maine 11 me kuch bhi nhi pdha tha but 12 me accha teacher milne pr bio and chem me 95 marks the .

[@AvinashKumar-bu8st]

@@rishabhsingh9638 bro thanks yaar...ill surely give my 100% and work hard

[@AvinashKumar-bu8st]

@Satwik Tripathi thanks bhai....

[@Shubham-on9cx]

One of the best lecture of physics. 👌👌

[@omkarrane8746]

At 1:01:49 Shall we do it in terms of area. Means from Kirchoff's Law, we can get that E is inversely proportional to Area. So x has less area than y. So Ex>Ey.

[@pratyushdixit9828]

According to emissive power : E=Q/At Emissive power (E) is inversely proportional to time (t) If t is more the emissive power is less so we can see that in y the time is more (Ey is less) And in x the time is less (Ex is more) So , Ex > Ey and if the body emits the more radiation then it also absorb the more radiation ax>ay

[@eshankulkarni]

Sir, never seen such a sarwa gun sampanna teacher like you! You have all qualities to be called a TEACHER

[@Fahad-gf1wx]

Sir please make a video on graph questions I face problems in graph questions in general What should i do

[@drmandal8670]

outstanding lecture.......Thank u sir for ur support.......😊

[@HarshRaj-ix8ik]

sir bohot bohot bohot infine......achhe ho sir maine pura class11 apka lecture follow kiya bina koi class kiye

[@xXmayank.kumarXx]

48:45 If body is red in color, then how come its absorbtive power for that wavelength is high? It must be low!!??

[@rakshityadav5895]

ya-u-r-right

[@aliferousme4095]

Ya 23:44 he told red is reflected.... When he was teaching kirchoffs law he told red is absorbed the most. Y?

[@muskanagrawal7399]

35:08 vry cute 😁

[@mohankumaryadav7754]

Beautiful

[@mohankumaryadav7754]

@@muhsinmuhsin7236 padhai karooo

[@sachinchauhan2872]

@@muhsinmuhsin7236 rellay m

[@sachinchauhan2872]

@@muhsinmuhsin7236 pakistan m bi physics padtya ha😀😀😀😀😀😀😀😀😀😀😀

[@radherbt]

Sir mene aaj ka lecture school 🎒📚 se chutti lekar complete kar liya 👍 Aur dopahar ko ek aur lecture dekh lunga and raat ko last lecture dekh lunga fir mera aaj aye chapter complete ho jayega. 🙏

[@SumitSharma-xq4hq]

Best is 4pm se 7pm me poora chapter khatam

[@AryanYadav-ty9qp]

31:53 while nerolac's chairman "oo maago turu lob"

[@mr.gen-z7623]

Best scene 27:27..... I saw it 5 times repeatedly 😂😂😂🤣🤣eeeeee dhoom..😂😂🤣😃Best Sir, HE MAKES LECTURES REALLY INTERESTING.. HIT LIKE👇👍 WHO TOO SAW THIS SCENE REPEATEDLY

[@bhavyanayak4342]

After reading this comment 😂😂😂

[@beinghuman900]

The best KZbin tutor🥺🥺🥺🥺🥰🥰🥰

[@wrestlinghellturn9418]

Sir at 31:00 nerolec ka paint chal jayga kya 😀😀

[@sxransh]

No.

[@devangbansal5425]

@@sxransh oho🤣

[@sxransh]

@@devangbansal5425 chutiye log h ye xD

[@adityaujjwal2674]

@@sxransh mazak karraha tha Bhai vo plz don't abuse

[@Vijaykumar-to8kq]

The only teacher who don't ask to subscribe or like the video... 😇😇.. Becaz he know his videos r best 😉😉

[@factstrip786]

Thanks for helping all Students 🙏🙏🙏 You are the Greatest Teacher 🤓🤓🤓

[@lakshminarayanpanigrahy9881]

Chak de physics wallah👍👍👍👍👍

[@lopitajena6637]

Sir ab soch rahi hu app mujhe pehle se kuyn nehi mile 😢😢 ❤❤ fantastic explanation❤

[@aditiapoorva6117]

Sir where is ur black glove. Without black glove 😯

[@greensnake7483]

😂😂😂😂😂 yeah..i used to think i am the only one who notices it

[@prakharrai114]

it's perfectly black body...that's why u can't see it...it's still there...sry bad joke

[@renumalik8386]

@@prakharrai114 🤣🤣🤣🤣👌👌

[@prakharrai114]

@@renumalik8386 😝😝

[@happshot4336]

@@prakharrai114 bro black body hai, john cena thodi, black body reflect karke to black ki dikhega, heat denge to colour red to incandescent jayega