MHT CET 2023 Physics question

The maximum kinetic energy of the photoelectrons varies

(A)inversely with the intensity of incident radiation and is independent of its frequency
(B)inversely with the frequency of incident radiation and is independent of its intensity
(C)linearly with the frequency of incident radiation and depends on its intensity
(D)linearly with the frequency of incident radiation and is independent of its intensity.Correct

Answer: (D)

Solution

Einstein's photoelectric equation: , where is the work function of the metal. This is a linear relation in the frequency (a straight line of slope with intercept ). The intensity of light only determines the number of photons per

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Question ID VK-095146