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For certain photosensitive material, a s...

For certain photosensitive material, a stopping potential of `3.0 V` is required for light of wavelength `300nm`, `2.0V` for `400nm` and `1.0V` for `600nm`. The work function of the material is `(nearly)

A

`2.5 eV`

B

`1.5 eV`

C

`2.0 eV`

D

`1.0 eV`

Text Solution

Verified by Experts

The correct Answer is:
D
`V_(S)e=hv-w=12400/(lambda "in" A^(0))-w,w="lev"`
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