Statement-I: Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the most effective for the emission of electrons from a metallic surface.
Statement-II: Above the threshold frequency, the maximum kinetic energy of photoelectrons is inversely proportional to the frequency of the incident light.
In the light of the above statements, choose the correct answer from the options given below.

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Both Statement-I and Statement-II are true

Statement-I is true but Statement-II is false

Statement-I is false but Statement-II is true

Both Statement-I and Statement-II are false

answer is A.

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Detailed Solution

Out of the rays given UV rays have maximum frequency, hence are most effective for emission of electrons from a metallic surface.

$K = h ν - W$

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