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A P - type semiconductor has acceptor le...

A P - type semiconductor has acceptor level 57 meV above the valence band. The maximum wavelength of light required to create a hole is (Planck's constant `h=6.6 xx10^(-34) J-s`)

A

`57Å`

B

`57xx10^(-3)Å`

C

`217100Å`

D

`11.61xx10^(-33)Å`

Text Solution

Verified by Experts

The correct Answer is:
C
`E=(hc)/lamda,lamda=(hc)/E=(6.6xx10^(-34)xx3xx10^8)/(57xx10^(-3)xx1.6xx10^(-19))=217100 Å`
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