NEET Physics Photoelectric Effect Assertion Reason Question
Assertion (A): The photoelectric emission from a metal surface is instantaneous. | Reason (R): The energy required for electron emission is supplied by light of suitable frequency.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
Photoelectric emission is instantaneous because the energy from light of suitable frequency is immediately converted to electron emission, as indicated in the NCERT context.
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