Question

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

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

Answer 1

Answer: (D)

Number of electrons emitted is a quarter of the initial number

Answer 2

: Photoelectric current $I \propto$intensity of light and

$\therefore I \propto$