Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Number of photons increases with increase in frequency of light. Reason R: Maximum ki

Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Number of photons increases with increase in frequency of light. Reason R: Maximum kinetic energy of emitted electrons increases with the frequency of incident radiation. In the light of the above statements, choose the most appropriate answer from the options given below:

TestHub · Accepted Answer

Intensity of light I = A nh ν ​ Here n is no. of photons per unit time. n = h ν IA ​ so on increasing frequency v , n decreases taking intensity constant. k m a x ​ = h v − ϕ So on increasing v , kinetic energy increases.

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Options:

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