Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If 
is the momentum of the fastest electron ejected from a metal surface after the irradiation of light having wavelength 
, then for 
momentum of the photoelectron, the wavelength of the light should be : (Assume kinetic energy of ejected photoelectron to be very high in comparison to work function):
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
In photoelectric effect,
Given that KE of ejected photoelectron is very high in comparison to work function 
.
New wavelength
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