Given below are two... | MODERN PHYSICS

JEE MAIN 2023

13-04-2023 S2

Question

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

Select the correct option:

Statement I is true but Statement II is false

Both Statement I and Statement II are true

Statement I is false but Statement II is true

Both Statement I and Statement II are false

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

UV rays have maximum frequency hence are most effective for emission of electrons from a metallic surface. $\mathrm{KE} \mathrm{max}_{\mathrm{m} .}=\mathrm{hf}-\mathrm{hf}_0$

Question Tags

JEE Main

Physics

Medium

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