Question

When light falls on a metal surface,the maximum kinetic energy of the emitted photo-electrons depends upon

• A. The time for which light falls on the metal
• B. Frequency of the incident light
• C. Intensity of the incident light
• D. Velocity of the incident light

Answer 1

Answer: (B)

Frequency of the incident light

AS we know,

$K_{max}=(hv-W_0);v=$ frequency of incident light.

hence,

When light falls on a metal surface, the maximum kinetic energy of the emitted photo-electrons depends upon the frequency of the incident light.