🔴 Photoelectric Effect || Chemistry for Class 11 in Hindi
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- เผยแพร่เมื่อ 14 ต.ค. 2024
- In this Chemistry video in Hindi for class 11 we explained photoelectric effect, which establishes the particle nature of light and hence, dual nature of light. This phenomenon was observed by Heinrich Rudolf Hertz in 1887. But he failed to explain this phenomenon using Classical Physics. In 1905, Albert Einstein explained Photoelectric Effect using Modern Physics.
🔴 Link for the playlist on the chapter ‘Structure of Atom’ for Class 11 - Chemistry
• Discovery of Electron ...
🔴 Video on 'Photoelectric Effect' for Class 12th :-
Part 1
• PHOTOELECTRIC EFFECT -...
Part 2
• PHOTOELECTRIC EFFECT -...
After watching many videos on this topic I can't understand but after watching your videos I understand very well. Thanks a lot sir 👌👌
It is not that hard
Gravity circle ke video's Dekho
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Sir agar minimum energy se photon jayega to uski saari energy sirf electron ko eject karne me use ho jayegi . Iska matlab yaha hai ki agar minimum energy se photon jayega to electron ki kinetic energy zero ho jayega iska matlab minimum energy me bhi photoelectric effect nahi hoga . Sir maine sahi bola hai ki galat pls reply
In the photoelectric effect, why can two or more photons not add up to make sufficient energy to cause emission of electrons from a metal? Why do we see one photon-one electron interaction?
Because photons don’t add up to each other’s energies. They can only add up to their own amplitudes or intensities. Photons’ energies are related only with their frequencies (frequency of their electric and magnetic fields oscillations) and not with their intensities (how much photons are bunched together).
So if an electron’s bondage energy to its orbit or to atomic nucleus is higher than the energy of a photon’s frequency, it doesn’t matter how much of the same photons hit such an electron. Their energies can’t overcome the threshold of even a single electron’s bondage energy to its orbit in an atom.
On the other hand, just one single photon with higher energy than such a threshold is enough to break apart an electron’s bond to its orbit or nucleus.
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Sir..... Is Solar panels based on the principal of photoelectric effect...?
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Sir quantum theory ke hisab se E=hv , sir intensity =power/time, power=energy / time so dekha jaye to intsnsity directly proportional to energy h , aur intensity directly proportional to frequency hona chahiye , lekin aisa nahi hota , kyu , why sir , plz bta do
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Good explanation sir .
01. Was Ammeter made in 1887 to be used in experiments ?
02. Potassium is highly reactive in Air. Then how it was converted into a plate form and inserted inside the tube which is vacuumed, that too in 1887.
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Sir in photoelecric effect no. Of electrons ejected is proportional to?????
Sir i have a question, which has more intensity in VIBGYOR ? sir please answer.
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Very nice explanation sir. 👌🏽
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Sir,electron ejicting from negative plate is time consuming or not after light incident..
Sir I have a doubt
Every rational no. We can represent it in p/q form
Can we represent 0.999..... in p/q form?
I represent it and it will be equal to 1 . How?
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Sir, the photoelectric equation should be only for initial kinetic energy.because the electric fields should increase it velocity after it is ejected.
Right?
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Sir I have a one question if I want to experiment at home what thing is necessary in this activity.
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Sir cant we compensate for the lack of neww by intensity or time for red light for potassium?
There are surface electrons too on metal surface.Why energy needed to bring electron at surface?
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op sir nicely explained
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But i had a question if the photons are continuously striking the metal and ejecting electrons from it why don't a situation is created where there are no electrons left in metal?
There are quadrillions of electrons.
It is simple.
The metal loses electrons so that creates a potential difference between the anode and the negative pole of battery. So electrons will move to the anode again !
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Sir agar intensity jyada hone par current jyada hoga to aapne sabse pahle kaha that ki red light ki intensity Yellow light se jyada hai to phir red light main photons bhi jyada honge to usme ye effect kyon nahi dikhta
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In cathode ray experiment same set up was used and current was flowing but in the Hertz experiment current is not flowing what is the reason??
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Which metal or non-metal is used to make "detector"..in this experiment??
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i also think so
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