MHT CET 2024 Physics question

If the frequency of incident radiation (v) is increased, keeping other factors constant, the stopping potential (, threshold frequency)

(A)increasesCorrect
(B)decreases
(C)remains constant
(D)suddenly becomes zero

Answer: (A)

Solution

From Einstein's photoelectric equation, , so the stopping potential is . It is a linear function of the frequency with slope (independent of the metal and of intensity). For , increasing with all other factors

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Question ID VK-096780