MHT CET 2026 Physics question

According to Einstein's photoelectric equation, the graph of the kinetic energy of the emitted photoelectrons versus the frequency of incident radiation gives a straight line whose slope

(A)depends on the intensity of incident radiation.
(B)depends on the nature of the metal used.
(C)is the same for all metals and independent of the intensity of radiation.Correct
(D)depends on both the intensity of incident radiation and the nature of metal used.

Answer: (C)

Solution

Einstein's equation is , which is of the form with on the y-axis and on the x-axis. The slope is therefore , Planck's constant, a universal constant that is the same for all metals and does not depend on the intensity of the radiation. The

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Question ID VK-100991