NEET Physics Photoelectric Effect Assertion Reason Question
Assertion (A): The photoelectric emission is possible only if the frequency of the incident light is greater than the threshold frequency. | Reason (R): The intensity of light affects the maximum kinetic energy of the emitted photoelectrons.
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
The assertion is true as the photoelectric emission requires the frequency to be above the threshold. However, the reason is false because the intensity of light affects the number of photoelectrons, not their kinetic energy, which depends on the frequency.
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