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Dual Nature of Radiation question

2025 · 29 Jan · Shift 1 · Q72
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Dual Nature of Radiation question

2025 · 29 Jan · Shift 1 · Q72

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
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 :
  1. A
    Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. B
    Both (A) and (R) are true but (R) is not the correct explanation of (A).
  3. C
    (A) is false but (R) is true
  4. D
    (A) is true but (R) is false
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