Question

From photoelectric effect experiment, select the correct statement.

• A. Photoelectric effect can be explained using wave theory of light.
• B. The maximum kinetic energy of a photoelectron depends on the intensity of incident light.
• C. The stopping potential depends only on the work function of the metal.
• D. The saturation current increases as the intensity of incident light increases.

Hint:

Photoelectric effect summary:
• kinetic energy \(\rightarrow\) frequency dependent
• saturation current \(\rightarrow\) intensity dependent e}

Answer 1

The Correct Option is D

Concept:
In photoelectric effect:
• maximum kinetic energy depends on frequency of incident light,
• saturation current depends on intensity of incident light,
• stopping potential depends on both frequency and work function. e} ip

Step 1: Check each statement.
(A) is false because classical wave theory cannot explain photoelectric effect fully. (B) is false because maximum kinetic energy does not depend on intensity. (C) is false because stopping potential depends on incident frequency as well as work function. (D) is true because more intensity means more photons per second, hence more emitted electrons and larger saturation current. ip Hence, the correct answer is:
\[ \boxed{(D)\ \text{The saturation current increases as the intensity of incident light increases}} \]