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When a certain metallic surface is illum...

When a certain metallic surface is illuminated with monochromatic light of wavelength `lambda`, the stopping potential for photo electric current is `6 v_(0)`. When the same surface si illuminated with light of wavelength `2 lambda`, the stopping potential is `2v_(0)`. The threshold wavelength of this surface for photoelectric effect is -

A

`2 lambda`

B

`8 lambda`

C

`6 lambda`

D

`4 lambda`

Text Solution

Verified by Experts

The correct Answer is:
D
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