Question

Which of the following graphs best represents the variation of photo current with respect to intensity of radiation?

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

If intensity of radiation is increased, more no. of photons will strike to the metal surface, hence emitting more no. of electrons.
$\therefore$ Photo current $\propto$ Intensity.

$\therefore$ Option $\left(A\right)$ is the right answer.