PHOTOELECTRIC EFFECT - Part 1 | Work Function, Threshold Frequency | video in HINDI
In this Physics video lecture in Hindi for class 12 we discussed on Photoelectric effect and derived Einstein's photoelectric equation. Few terms we discussed here are photoelectrons, photoelectric current, work function, threshold frequency, photon etc. When radiation of sufficient frequency incidents on a metallic surface, electrons are emitted from that, known as photoelectrons. The minimum energy required to eject a free electron from the metallic surface is known as work function. The minimum frequency for which photoelectric effect occurs is known as threshold frequency.
We also discussed on the laws of photoelectric emission :
(1) Frequency of incident radiation ≥ Threshold frequency
(2) Maximum kinetic energy of photoelectrons depends upon the frequency of photon (and does not depend upon intensity of radiation)
(3) Number of photoelectrons ∝ intensity of radiation (and does not depend upon frequency)
(4) Photoelectric emission starts as soon as radiation falls on metal surface
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Arijit Daripa
EduPoint,
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Chandil,
Dist- Seraikela-Kharsawan,
Jharkhand,
India.
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Hello Edians !
Best video of photoelectric effect
I am a working professional in Aerospace field but still love to learn the concepts of other fields... Bcz we don't know when we will find a link between two different fields and give birth to new one
Thank you so much sir. But sir, the word 'thanks' is insufficient to convey the level of gratitude I have for you. you are my inspiration sir and you are doing great job, sir.
Sir main ek cheez main bhut confuse hu ki particle ki frequency ki definition same hai wave ki frequency ke toh us hisaab se toh photon ki frequency speed ke saath badni chahiye kyoki speed bdegi toh no. of photons jo certain point se pass krte hai woh badenge but photon ki speed constant hai toh particle ki frequency ka exact mtlb or jab hum kehte hai ki particle ki frequency jyada hai to Kya change hota hai pls madad kijiye explain 🙏🙏
Really learned sooo much!!!!! Thank you so much sir
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Kya bat hai sir mze aa gye
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Please force pressure and friction topic par video banaye for beginner
Thankyou so much sir for clearing my doubts😎
भाई सामजाने का तरीका बहुत बहुत अच्छा है अपको नमस्कार
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Bahut dino baad aaye ho sir
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