Certain photosensistive surface|MODERN PHYSICS|JEE-MAIN-2019

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JEE MAIN 2019

12-01-2019 S2

Question

When a certain photosensistive surface is illuminated with monochromatic light of frequency $v$, the stopping potential for the photo current is $-\frac{\mathrm{V}_0}{2}$. When the surface is illuminated by monochromatic light of frequency $\frac{v}{2}$, the stopping potential is $-\mathrm{V}_0$. The threshold frequency for photoeletric emission is:

Select the correct option:

A

$\frac{3 v}{2}$

B

$\frac{4}{3} v$

C

$\frac{5 v}{3}$

D

$2 v$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

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