The frequency and work function of an incident photon are 
and 
. If 
is the threshold frequency then necessary condition for the emission of photo electron is
A
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
C
The photoelectric equation is given by
So, for maximum kinetic energy, frequency should be more than the cut-off frequency and wavelength should be less than the cut-off wavelength.
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