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Assertion :- When ultraviolet light incident on a photo cell, its stopping potential is \( \mathrm{V}_{\mathrm{s}} \) and the maximum kinetic energy of photoelectrons is \( \mathrm{K}_{\max } \). When the ultraviolet light is replaced by \( \mathrm{X} \)-rays, both \( \mathrm{V}_{\mathrm{s}} \) and \( \mathrm{K}_{\max } \) increases
- Reason :- Photo electrons are emitted with speed. ranging from zero to a maximum value because
- of the range of frequencies present in the incident
- light.
(1) A
(2) B
(3) \( \mathrm{C} \)
(4) D
(A) Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.
- (B) Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.
(C) Assertion is correct, but reason is wrong statement.
- (D) Assertion is wrong, but reason is correct statement.
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