MHT CET 2025 Physics 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.Correct

Answer: (D)

Solution

Intensity means the number of photons per second striking the metal, so a larger intensity ejects more photoelectrons per second (for frequency above threshold) and the saturation current increases in proportion, so (D) is correct. (A) is false: the wave theory cannot explain the threshold frequency,

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Question ID VK-102196