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The stopping potential for photoelectron...

The stopping potential for photoelectrons from a metal surface is `V_(1)` when monochromatic light of frequency `v_(1)` is incident on it. The stopping potential becomes `V_(2)` when monochromatic light of another frequency is incident on the same metal surface. If h be the Planck's constant and e be the charge of an electron, then the frequency of light in the second case is

A

`v_(1)- (e )/(h) (V_(2) + V_(1))`

B

`v_(1)+ (e )/(h) (V_(2) + V_(1))`

C

`v_(1)- (e )/(h) (V_(2)-V_(1))`

D

`v_(1) + (e )/(h) (V_(2)-V_(1))`

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