Q.

The maximum kinetic energy of the emitted photoelectrons in photoelectric effect is independent of:               [2023]

1 work function of material  
2 intensity of incident radiation  
3 frequency of incident radiation  
4 wavelength of incident radiation  

Ans.

(2)

Using photoelectric equation,  

E=hυ-ϕ0

Maximum kinetic energy of emitted electron is independent of intensity of radiation.  

The intensity of incident radiation varies with photo current if threshold frequency requirement is fulfilled.