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 KZfaq) 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 =========================================================== Class 12 chap 11 II Dual Nature Of Radiation and Matter 01 : Photoelectric Effect - Part 1 JEE/NEET kzfaq.info/get/bejne/aLCJhrmkvbyXcZc.html Dual Nature Of Radiation and Matter 02 II PhotoElectric Effect - PART 2 -Stopping Potential JEE/NEET kzfaq.info/get/bejne/i89moJt4z7TGdGQ.html Dual Nature Of Radiation and Matter 03 II Wave Nature Of Matter - De Broglie Hypothesis JEE/NEET kzfaq.info/get/bejne/eJN-mtlox8zVn30.html Dual Nature Of Radiation and Matter 04 II Davisson and Germer Experiment with Bragg's Law JEE/NEET kzfaq.info/get/bejne/nqyqitCJucusZ2Q.html

Sir mere ko iss sal govt medical college main admission mil gaya tha bcz of u 90% .10 % mera mehnt...bahut din baad ghar main purana mobile main apke video ka notification dekhke purane din aa gaye. I miss u sir.i m from tripura.

"Har particle wave ban sakta he agar motion me ho lekin har inshan physics wallah nhi ban sakta agar youtube me ho" Love u sir❤❤❤❤

no matter how much success you are gaining today sir..will alyways miss the original ALAKH PANDEY AND HIS WOODEN BOARD

Sir, u are the best. Ur way of teaching and interaction makes even a boring topic really interesting and fun to learn!

Vidhi ka vidhan dekho Jj Thomson won nobel prize by finding electron is particle then his son got nobel prize by proofing electron is wave....

✓ 00:01:07 - 00:03:29 Revision of de Broglie hypothesis. ✓ 00:03:30 - 00:06:37 Background of Davison and Germer experiment. EXPERIMENT [ I ] 00:07:07 - 00:16:15 Experimental Setup. [ II ] 00:16:20 - 00:32:25 Observations • 00:26:20 - 00:27:01 Graph { I v/s phi} ✓✓(V.imp) 00:32:20 - 00:48:29 *BRAGG'S LAW* ✓ 00:48:37 - 00:50:19 VERIFICATION OF DE BROGLIE FORMULA FROM BRAGG'S FORMULA. ✓ 00:54:30 - 00:58:23 JEE MAIN 2008 Question based on BRAGG'S FORMULA ❌❌ Important points ❌❌ i ) Peak of intensity at 54V & 50° ii ) BRAGG'S LAW - for crystal constructive interference. a.} Bragg's formula ✔️2dsin (theta)=n(lamda) Where, theta= angle between incident wave and atomic layer. d= distance between atomic layers. • Lamda = 1.65 for electron (n=1) • Lamda = 1.67 for photons

Congratulations on completing another chapter 😁

this is by far my favourite alakh sir's lecture...i loved the way sir explained the experiment..even though i haven’t learnt about interference that much....sir made it look very easy to understand

Alakh Sir's age=no. Of likes on the comment

At 35:34 Movie name is "kho na pyar.. he..." One of the my favorite movie

Today i got the results of physics unit test. I had studied from Alakh sir. Very proud to say that i achieved 40 on 40(and no one else could) 2 months back.. i used to have anxiety and panic attacks because of physics exam... And today i topped it.. all because of you sir.. cannot thank you enough ❤️❤️❤️❤️❤️

1year old..but still worthy....sir I know ki aap toh àab comments nhi dekhte hain ...1 saal ho gaya..but still without commenting I can't proceed❤️...u r a hero for me...I have just come to class 12 this year...n am preparing for exam with all your 1 year old lectures❤️.....thank you so much sir❤️🙏

Best "institution" in india "PHYSICS WALLAH" Where the students not only learns studying but also learns how to live how to help and how to grow our country............ Every country need this man the world needs this message ....... Sir u are made to develop the minds of the students for their bright future as well as bright future of the world..... Just millions of "SALUTE" {ALWAYS}........

Kabhi socha nahi tha ki ye chapter itna interesting hoga....sir u r great...😊👍👍

Sir ur conceptual clarity is infinitely incredible. Some people just gather intelligent students and teach some hither theither things and when those kids secure nice marks they take the credit. But u literally a REAL TEACHER... Who can clear the concepts of even the dumbest student also. U staying away from me can clear our those concepts and doubts also which these ttn teachers who r near us also can't do

You have more subscribers than students clearing jee mains....😂 Power of physics wallah!!

hit the like button those who think that sir can write a great book of physics

when you realise Ray optics is bigger than 4 chapters collectively 😂😂

35:10 Song - Chand sitare phool aur khushboo Movie - Kaho na pyaar hai

Other educational KZfaq channels might have latest technologies to make things easy for the teachers and students, but Alakh Sir has the feeling and experience which makes him the greatest among all others in this filed of teaching.

51:23 best part of the video... Very well said by Niels Bohr, "If quantum mechanics hasn’t profoundly shocked you, you haven’t understand it yet." Sir aap jis excitement se physics padhate ho mtlb full feel... Aap jeeto ho sir physics... itna khush hokr kisi ko physics padha te nahi dekha....

23:38 no phy Teacher can explain with this level of action

Sir, aap KZfaq ke sabse best teacher ho according to me as a student of alak sir

Sir ko nobel prize milna chahiye........if u think so like here below 👇👇👇

After this nuclei or semiconductors,please please,we want those topics very badly. If agree then hit like 👆🏻👆🏻👆🏻

Sir i am a Pakistani student and lovr your lectures 🇵🇰🇵🇰🇵🇰

Who is Watching this Video In Holidays due to Covid

Question( other country) : aur Janab kya chal rha hai?? India: aaj kal to physics wallah chal rha hai.

Poore desh me ho rha hallah hai... Sbse best apna physics wallah h 😁😋

sir legend ho app yaaar....LOVE from PAKISTAN...... mein apnay professor say ziada too aap say physics seekhta hoon although u are teaching indian textbook. But ur lectures are sooo soo comprehensive kay aap ka lecture lay kay apni book khooloon to sara kuch feel hota hai.... I wish kay aap pakistan ky physics syllabus aour topics kay hawalay say bhi videos bnaeen

15:20 is the time where I fell in love with alakh sir. What an explanation for that weird behaviour of the electron.

Sir next chapter semiconductor please.. Hit like those who want semiconductor before atoms nuclei

Sir is great

Sir u r honestly some students' everything.. this free context is certainly a magical potion (अमृत)

Complete 👌💯 1lesson in one day without any anxiety bcoz of Alakh sir ☺thnku sir ☺

Sir please start semi conductor and diode

Yes me to semiconductor

Thank you so much sir. You are sucha great person. Keep going, keep growing. 💜

35:37 atmaram tukaram bhide = alakh sir both are legends in teaching

Unacademy and vedantu are good But.. Physics wallah is monster when compared to them 🔥

May God bless u sir.u are the only teacher who knows what student wants . Whenever u teach something all my doubts get cleared. Thank u for giving us your best🥺

35:30 Movie name - Kaho Naa Pyaar Hai

Thank u so much sir ji for this lecture🎊 🎊. Your way of teaching any topic of physics and chemistry is awesome. 💯Clear concept of wave nature of matter.

Sir u are amazing you are pulse of my heart you are my favourite I studied this chapter in my coaching but I didn't understand but your way to teach... My all CONCEPTS are cleared

Yes sir concepts are crystal cleared!!!

Sir apko bhi Nobel prize milna chahiye ..physics ko itna easily smjhane me😄🙏..bht bht thanq sir

Only for our bright future alakh sir's hard labour can become successful only by our good results in the school as well as in entrance exams. Thank you so much sir .

Thank you so much for your such a great help and support for our study. And life. Love you from : Gujarat (kutch)

The level of energy sir has while teaching is just awesome👍👏👏 ❤

Thanku sir jb bhi mood off hota hai aapke lecture dekh kr m Khush ho jata hu phirr se chhre pe smile ahi jati hain love 💕 yu sir

The feel you gave at the end just wow.... Salute to you sir

Crystal clear explanation 🙏thank you 🙇mikka nanri

Resolving power ka feel Bach gya wave optics se

Sir your lectures are really helpful , you are the only one who can make physics a intresting subject ❤️❤️thankyou sir May God Bless You 🥰🥰

51:00 to 54:14 my favorite part of the lecture

Like who want next ch Semiconductor...👇👇

Best part ... 50:30 nobody in coaching centres explained this ... Thank you sir

It Is true That "PHYSICS IS THE STUDY OF NATURE AND ITS LAW" and "MATHEMATICS IS THE LANGUAGE OF PHYSICS" But this is now also true that "ALAKH SIR IS THE FEEL OF PHYSICS"💙💙💙

I can feel his love for physic ❤️

Excited to learn Quantum physics from you sir😍

Sir many students like me are dependent on you, please complete the topics: alkynes in hydrocarbon;damping in shm;toppling in rotation

Sir I cannot express my gratitude in words towards you , you have made everything so easy and convenient for us thanks a lot sir for being there you are a true legend

Alakh Pandey sir is best sir poori gahrayi se neet aur jee ke liye sufficient part achhe se. With every possibility samagha dete h thanks alakh sir ur lectures are helping me .....

Maza aagya Sir 🔥😎 ekdum concept clear hogye🔥❤

Sir apka parane ka style mujhe bohot bohot accha lagta hai. Jabardast interest aa jata hai. We are proud to get such a youthful teacher.

kis kisne coaching mm paise dubhaye like karo😂😂👍👍🤣🤣🤣

This was so interesting that I watched it from first to last lecture video continuously 😊(And never felt "When this is going to get over?😕).. It is to the point,with example qts it is easier for me to solve similar NEET based qts He is the best Physics Teacher to make us understand the concepts crystal clear.❤️

Hi sir I am from wb board and follow your lesson from 9th class till now (12) apki padhai boht madat karta Hain , thanks sir

Love for alakh sir directly proportional to the time.💖💕💞💗💝💕💕💖💖💕💕💝💗💖

Sir thanks for this chapter I perfectly understand the chapter

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

The best video I watched ever... It had helped me in making decision... I was in doubt whether I will continue with science or switch with polity... The way sir taught about modern scientists I got goosebumps. Now it doesn't matter whether I am going to IIT or not.. I will continue with science and will devotee my entire life in research.. thankyou sir ❣️🙂

27:24 best part🔥🔥. " SAB SOCHO, SAB SOCHO. YAHI TO UMAR HAI SOCHNE KI"🔥❤

sir, you are god for me because you can give us perfect concept about all physics phenomenon

Sir you are the best physics teacher I have ever experienced in my entire life. Phenomenol explaination... 👍

Sir ur songs are much more better than orignal one..really u are the best teacher😀🤩

Thankyou sir ❤️❤️ bhut ache se smj aa gya Best explanation

Alak pandey knows how to deliver knowledge to even average student .Thanks are very small word for this legend .

these two years have been quite great as class 12 is going to end we wont be able to learn more from you sir do start a new series for the college students we want to see you in a new avtaar

Thank you sir . It was an amazing lecture...♥️♥️♥️♥️♥️😃😃😃😃

The greatest art of leaving things undone is leaving things done. isn't sir,thanks for the help and for free KZfaq class

35 : 35 ..................... Kaho na pyaar hai ......................... "THE" first film of my inspiration , my favourite .....................HRITHIK ROSHAN..............

You are simply amazing!☺️

Really this man is just a GENIUS...💓💓PW forever

Now all topics are I learned Crystal clear.

Thank you sir.Making class lively and full of clear cut concepts of physics.Good job sir very useful session👍

Thanks For Your Effort Sir..

Electron dogla hai. Light dogla hai. Sab dogle hai. ~De Broglie

Sir u are the best sir I really understand physics bcoz of u and u only

52:41 TO 53:04 : Alakh Sir in romantic mood 😃..."Palat jaun aur mud kar dekhu..."...."Electron ko dekhta rahun..." This is true love guys.

Stop reading comments listen to him carefully😂😂😂

Semiconductor wants????? 👇🏻👇🏻👇🏻

This video is not for 2023-2024 students who are only focusing on boards.

just love your way of teaching !

Feel wallah the only "PHYSICS WALLAH"👍👍

Love you sir Ab physics khàtam karo sirjee

Absolute Legend alakh Pandey sir... Last wala dono questions ke answer sahi the mere....❤️🙏🔥 Love you sir.... World best physics teacher.... It's not physics Wallah,it's feel wallah...🔥🙏❤️❣️😍

Hats off for you sir hum ek ghante ka video dekh kr thak jate h pr kese 2 ghante ke video bna lete ho kitni mehnat lgti hogi or wo bhi sirf camre ko dekh kr pr sir kabi esa lgne ni dete ki hum recorded video dekh rhe h esa lagta h aap humko live pdha rahe ho thank you sir for doing so much for us without expecting any reward or taarif

Kya baat hai sir ji Thank you for video SIR JI we all love you 👍☺️