Physics · 2025
JEE Main · 29 January 2025, Shift 1 · Q44
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Emission of electrons in…
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Emission of electrons in photoelectric effect can be suppressed by applying a sufficiently negative electron potential to the photoemissive substance.
Reason (R) : A negative electric potential, which stops the emission of electrons from the surface of a photoemissive substance, varies linearly with frequency of incident radiation.
In the light of the above statements, choose the most appropriate answer from the options given below :
Official answer
From NTA’s final answer key for this paper.
(3)
Both (A) and (R) are true but (R) is not the correct explanation of (A)
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.