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When a centimeter thick surface is illum...

When a centimeter thick surface is illuminated with light of wavelength `lamda`, the stopping potential is V. When the same surface is illuminated by light of wavelength `2lamda`, the stopping potential is `(V)/(3)`. Threshold wavelength for the metallic surface is

A

`4 lambda//3`

B

` 4 lambda`

C

` 6 lambda`

D

` 8lambda //3`

Text Solution

Verified by Experts

The correct Answer is:
B
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MOTION-MODERN PHYSICS -1-EXERCISE-1
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