The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of the photocell varies as follows : (Assume that rate of photon falling is maintained constant)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
As 
is increased, there will be a value of 
above which photoelectrons will be cease to come out so photocurrent will become zero.
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