Question

In a photoelectric experiment, intensity of a light source is doubled while its frequency is kept the same. Then consider the following statements.
(i) The saturation photocurrent remains almost the same.
(ii) The maximum kinetic energy of the photoelectrons is doubled.

• A. Both (i) and (ii) are true
• B. (i) is true but (ii) is false
• C. (i) is false but (ii) is true
• D. both (i) and (ii) are false

Answer 1

The correct option is D both (i) and (ii) are false

Since frequency of light source is kept the same, the energy carried by each photon will also remain the same and hence, the maximum kinetic energy of the photoelectrons will remain same.

As intensity is doubled the saturation current will be doubled, as the photocurrent is directly proportional to intensity.

Hence, $\left(D\right)$ is the correct answer.