Q 12-11-088JEE MainJEE Main 2023 (13 Apr, Shift 2)Easy
Given below are two statements:
**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 above statements, choose the correct answer from the options given below.
Answer: (B) Statement I is true but Statement II is false
UV photons have the highest energy of the three, so they are the most effective: Statement I is true.
$K_{max}=h\nu-\phi$ increases linearly with $\nu$: Statement II is false.
Solution by Sreeraj P, M.Sc Physics