The Threshold Frequency.... | JEE Main 2023 | Modern Physics

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JEE MAIN 2023

01-02-2023 S2

Question

The threshold frequency of metal is $f_0$. When the light of frequency $2 f_0$ is incident on the metal plate, the maximum velocity of photoelectron is vi. When the frequency of incident radiation is increased to $5 f_0$. the maximum velocity of photoelectrons emitted is $v_2$. The ratio of $v_1$ to $v_2$ is:

Select the correct option:

A

$\frac{v_1}{v_2}=\frac{1}{2}$

B

$\frac{v_1}{v_2}=\frac{1}{8}$

C

$\frac{v_1}{v_2}=\frac{1}{16}$

D

$\frac{v_1}{v_2}=\frac{1}{4}$

✓ Correct! Well done.

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