Assertion (A): The minimum negative potential applied to the anode in a photoelectric experiment at which photoelectric current becomes zero, is called the cut-off voltage. Reason (R): The threshold frequency for a metal is the minimum frequency of incident radiation below which emission of photoelectrons does not take place.

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Physics · Dual Nature of Radiation and Matter

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).

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Answer 1

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Answer 2

Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).

Answer 3

Assertion (A) is true, but Reason (R) is false.

Answer 4

Both Assertion (A) and Reason (R) are false.

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