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Conductivity of a semiconuctor increases...

Conductivity of a semiconuctor increases when a radiation of wavelength is less than `2480 nm` is incident on it. The forbidden gap is

A

`0.5 J`

B

`0.5 eV`

C

`1 eV`

D

`2 eV`

Text Solution

Verified by Experts

The correct Answer is:
B
`"energy"=[(12400)/(lambda "in" A^(@))]eV`
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