The stopping potential necessary to reduce the phtoelectric current of zero-

Options

A. Is directly proportional to wavelength of the incident radiation
B. Increases uniformly with wavelength of the incident radiation
C. Is directly proportional to frequency of the incident radiation
D. Decreases uniformly with the frequency of the incident radiation

Answer

C

Explanation

`K_("max") = hf -phi_0`
`implieseV_0 =hf -phi_0implies V_0 =(h/e)f -phi_0/e`
`implies V_0 prop f`