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Grade: 12
        which is correct about photo electrons
1. electrons are emitted from metal surface when light falls on it
2. the KE of photo elecrons is more for light of longer wavelength in comparison to that due to shorter wavelenght
3. none

Ans is 3 Why not 1.
4 years ago

Answers : (2)

Sher Mohammad
IIT Delhi
askIITians Faculty
174 Points
							Electrons are emitted form metal surface only if the wavelength is more than the critical wavelength, so none of the above is answer.


sher mohammad
b.tech, iit delhi


4 years ago
Shivam
39 Points
							thanx
						
4 years ago
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