Class 12 Physics | Photoelectric Effect | #1 Introduction to Photoelectric Effect | For JEE & NEET

[@Memer2022]

This channel is underrated

[@bajilaansari2019]

Sir i m try hard for last 2 year physic 408 my score was this time,,,, how to increase my marks pls give me sugguestion .. such a easy topic of dual nature i find difficulty when the question get twiste

[@sreejeshnair8021]

Sir the photoelectric emission was first discovered not by Albert Einstein but by Heinrich hertz sir...

[@godstream-11th12th-ms9hv]

You are partially correct. Actually heinrich hertz sir could not explain the reason behind it. But after sir einstein performed the experiment with advanced equipments he was successful in finding the reason...

[@areyamirinbruv]

accha

[@ashutoshhh6614]

Respected sir, according to me, IE is energy needed to take out a bounded electron from any atom, whereas in work function, energy is needed to take out an electron which is already free, not bounded by any atom. Am I correct? Please respond 🙏🏽🙏🏽

[@royalX555]

yes you are right

[@kunwarvishwameetsingh]

wrong

[@abhinandanmishra6395]

Sir, Is in photocell as much amount of energy is produced as we need ?

[@ashutoshhh6614]

Sir, electron would eject even if hv = work function. It just would not have any KE and would drift in space. Am I correct? Please respond 🙏🏽

[@LadderVictims]

It would just go back into metal..

[@Dakshk24]

@@LadderVictims no it will come out of the metal and will have KE=0

[@kunwarvishwameetsingh]

it will be a free electron in the metal

[@darkrai2065]

Sir as photoelectric effect is the emission of electrons from metal "surface" ..so that mean only surface electron will eject and not the electron which present in depth of metal lattice.???

[@physicsgalaxyworld]

yes... electrons from conduction band only will be ejected...

[@alphaiitd1]

Starting photoelectric effect today

[@stilllearning3541]

Sir photoelectric effect was first observed by Heinrich Hertz in his spark gap generator experiment.As he was not able to explain it,so Einstein explained this effect and not discovered he just explained right or right??))

[@physicsgalaxyworld]

Yes it was thoroughly analyzed and explained through experiments by Albert Einstein...

[@krishseth3223]

Sir photoelectric effect was discovered by Hertz in 1887 And explained by Einstein in 1905 ? Written in my module.

[@p.ramyashri4110]

Sir .. Even in the absence of the photo cell ...battery does some work to move the electrons...ie even in the absence of photo cell ie only battery and wires ... Current flows in the ckt ... With the introduction of photo cell...new set of electrons and emitted .. Which would further enhance the current ..I thought..... But the electrons of the wire cannot move in btw the photo cell I guess... In the photo cell only the electrons emitted by the metal surface moves to the anode...... There's a clash I suppose ...maybe because of my wrong understanding..... It's like the electrons from the copper wire stop at the location of photo cell... Wherin a new set of electrons emitted from the metal travel and constitute current... Inside the photo cell. I'm really confused... Plz c correct me sir

[@abhayvgg]

sir does according to this effect a metal body stop supplying electron when the electrons exhaust and accordingly the metal would also shrink

[@physicsgalaxyworld]

electrons will not exhaust... but as electrons will emit body will get positively charged and it will increase the inward pull on further emitting electrons... then it is possible that after some time the positive charge increases to a level that it will not allow further emission of electrons...

[@abhayvgg]

Thanks a lot sir u always amaze me :)

[@NIGHTANGELS1]

Sir please upload chemistry videos

[@roneet9027]

Thank you sir

[@nikhilsadhu4913]

Is there is total modern physics available in physics galaxy for jee mains and what is the sequence

[@physicsgalaxyworld]

Yes... either use our mobile app 'Physics Galaxy' to watch all the lectures in proper sequence or goto link below to watch it through our website www.physicsgalaxy.com... sequentially you can proceed the topics once you watch all videos of one topic... www.physicsgalaxy.com/lectures/1/8/38/1371/Atomic-Structure

[@TheJae3013]

Sir according to me Photoelectric effect was discovered by 'Lenard'. Einstein was the one who could explain it.

[@ayushshah3357]

TheJae3013 it's Hertz not lenard

[@yourmomisgay377]

photoelectronic effect was discovered by Hertz and lenard told that when uv rays are incident on cathode,electrons are ejected,these electrons are attracted by anode and due to complete path of photo electrons,photo current flows.

[@shr1126]

You guys 🤣🤣🤣🤣😌

[@yashjoshi8278]

@@shr1126hm bhai 🤣👈7 years ago had h 😅😂

[@manish_02291]

Sir is work function equal to ionisation energy

[@psychofaiz7000]

4 sep 2020

[@divyanshsoni3677]

Sir why are electrons not ejecting from both the electodes

[@sksamimakhtar8478]

Sir please upload a video on raman effect

[@ankit4781]

sir namaste kya aap total chemistry k lecture bna sakte ho ya teacher bta do jo chemistry k lecture bnate ho

[@physicsgalaxyworld]

we are in process but will be uploaded by next year... as of now you can search topic wise lectures on youtube...

[@karimi3963]

Uploaded??? Next year arrived???

[@rohitbhomkar5933]

Is theory sufficient for jee advanced

[@ArvindSingh-we1jk]

Ashish sir had you forgot l s Sharma your physics teacher

[@ankuraks3919]

Sir is there any video on compton effect or davison gremer experiment??

[@fantasgeek1643]

Best ❤️ ❤️

[@harishmundada7408]

sir how should we memorize this we cannot also draw diagram

[@avinavsharma7207]

Sir please, release the USB media soon, great video as always!

[@physicsgalaxyworld]

By December'16 mid...

[@Debjit625]

About what USB media you are talking about ? Is it something where I can have all the lectures??

[@avinavsharma7207]

YES!

[@Debjit625]

Thanks I will be waiting

[@physicsgalaxyworld]

we will inform you... there is a slight delay in schedule... we may bring it by january'17...

[@kamaljangir3388]

Tnx sir

[@asitkandpal4698]

sir please reply , in which order i should watch your modern physics lecutres ?

[@mamataroutray1422]

first....atomic structure...then photo EE ...then wave particle duality....,x ray, nuclear physics

[@vipnirala]

sir why did all the electrons emmited toward anode only,why not opposite side?😐

[@sidharth7187]

Bro for this you have to understand the whole mechanism The electrons are emitted due to photoelectric effect ,then they are just emitted they have kinetic energy so that they can go in any direction to get them in a specific direction external potential difference is applied so that electron can travel from cathode to anode as from anode electrons can not travel(mostly) and the current is produced

[@divyajain503]

@@sidharth7187 dude he asked 3 years ago

[@mcb869]

👍

[@suvamkumar3370]

Sir what is the basic difference between work function and ionisation energy???

[@physicsgalaxyworld]

work function is defined for a surface of a lattice structure whereas ionization energy is the term used for independent atoms...

[@suvamkumar3370]

Thnx sir.sir for how much time PEE will occur bcs after some time when all tha electrons will be ejected then then there will be no electrons...

[@physicsgalaxyworld]

No... even before all the electrons are ejected PEE stops... because if there is an isolated metal body then it starts getting positively charged as its electrons are ejected and that makes ejection of electron difficult with time... and after some time when potential of body due to its positive charge increases to a level which does not allow the max KE electron to go out PEE will stop...

[@thesmartone6601]

@@physicsgalaxyworld Oh a question based on it is in HCV as an example

[@manmohankumar-j4e]

watching in oct 2024 😅

[@hero16926]

you were in sept tho

[@manmohankumar-j4e]

@@hero16926 same bro same 🤣

[@shivanshpandey7957]

🥰🥰🥰🥰

[@souravhasda4204]

29th April, 2021

[@RahulKumar-xd3er]

Sir modern physics ka jee main solution nahi hai.please please uplod

[@physicsgalaxyworld]

modern physics is composed of Atomic Structure, Photoelectric Effect, Matter Waves, X-Rays, Radioactivity and Nuclear Physics out of which first three topics are uploaded... you should know how to use youtube channel...

[@twisttracer]

Iss video me sir ji ko nind aa rahi hai😂🤣

[@sauravyadav3583]

Sir plz upload the video in hindi

[@krish-cf8cn]

iit kgp

[@sanyakumari1303]

worst lecture.

[@prathammathura]

thats what your father and mother think when they see u

[@Ashish_kr_9693]

​@@prathammathura they DM say waste

[@Cocxy69]

is the whole video playlist syllabus still relevant for 2023-24?

[@namerectified4041]

same doubt...any updates?

[@Cocxy69]

@@namerectified4041 yeah from what I got to know it's enough for advance

[@namerectified4041]

can i see this for first time and not for revision?

[@Cocxy69]

@@namerectified4041 yes this is the entire thing. They gave seperated the Chapter in multiple Playlists you can open their channel and see them in sequence. There's another series they have for revision. It's called Revison Checklist

[@namerectified4041]

ya thanks a lot for your reply, ill start watching this then