Photoelectric EffectHard
Question
The work function of a certain metal is 
. When a monochromatic light of wavelength λ < λ0 is incident such that the plate gains a total power P. If the efficiency of photoelectric emission is h% and all the emitted photoelectrons are captured by a hollow conducting sphere of radius R already charged to potential V, then neglecting any interaction between plate and the sphere, expression of potential of the sphere at time t is :
. When a monochromatic light of wavelength λ < λ0 is incident such that the plate gains a total power P. If the efficiency of photoelectric emission is h% and all the emitted photoelectrons are captured by a hollow conducting sphere of radius R already charged to potential V, then neglecting any interaction between plate and the sphere, expression of potential of the sphere at time t is :Options
A.V + 
B.V − 
C.V
D.
Solution
Number of photons emitted per second.
N =
Potential of the sphere after time t is
V′ = V −
N =
Potential of the sphere after time t is
V′ = V −
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