Statement I: The kinetic energy of the photoelectron ejected increases with the increase in frequency of incident light. Statement II: Increase in intensity of incident light increases the photoelectr

Question

Statement I: The kinetic energy of the photoelectron ejected increases with the increase in frequency of incident light. Statement II: Increase in intensity of incident light increases the photoelectric current.

Prashant Kotian · Accepted Answer

Correct answer: B. Statement I: K.E._max = h × ν - φ, so K.E. increases linearly with frequency ν (correct). Statement II: Intensity ∝ number of incident photons, so increasing intensity increases rate of photoelectron emission and hence photocurrent (correct). However, Statement II does not explain why K.E. increases with frequency — these are independent effects. Both statements are correct but Statement II is NOT the correct explanation of Statement I.

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