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When light of wavelength lambda is incid...

When light of wavelength `lambda` is incident on photosensitive surface, the stopping potential is V. When light of wavelength `3lambda` is incident on same surface, the stopping potential is `V/6` Threshold wavelength for the surface is

A

`2lambda`

B

`3lambda`

C

`4lambda`

D

`5lambda`

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The correct Answer is:
D
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