When monochromatic radiation of intensity I falls on a metal surface, the number of photoelectrons and their maximum kinetic are N and T respectively. If the intensity of radiation is 2 I, the number of emitted electrons and their maximum kinetic energy are respectively.

Options

A. both `n` and `K_(max)` are doubled
B. both `n` and `K_(max)` are halved
C. `n` is doubled but `K_(max)` remains the same
D. `K_(max)` is doubled but `n` remains the same

Answer

C

Explanation

Since frequency of light is same,`KE_(max)` remains same and if intensity of the light is doubled, number of photons doubles and hence `n` also doubles.