Question

Stopping potential required to reduce
the photoelectric current to zero
1) is directly proportional to the
wavelength of the incident radiation
2) Increases uniformly with
wavelength of the incident radiation
3) is directly proportional to the
frequency of the incident radiation
4) Decreases uniformly with the
frequency of the incident radiation

Answer 1

TRICK

The negative potential at which photoelectric current becomes zero is called  stopping potential.

If at the stopping potential light of frequency higher than before be made to fall on plate, then photoelectric current is re-established.

On  increasing the negative potential of the plate, the current again stops. Hence,

higher the frequency of the incident light, higher will be the maximum kinetic  energy of the emitted photoelectrons or higher will be the stopping potential

                                     BRAINLY