A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2 m then

Options

A. Each emitted electron carries half the initial energy
B. Number of electrons emitted is a quarter of the initial number
C. Each emitted electron carries one quarter of the initial energy
D. Number of electrons emitted is half the initial number

Answer

B

Explanation

Intensity of light source is, `I (1)/(d^(2))`
When distance is doubled, intensity becomes one-fourth of initial value.
As number of photoelectrons `props `intensity, so number of photoelectrons is quarter of the initial number