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Q.

In a photodiode the conductivity increases when light of wavelength less than 620 nm is incident. The band gap is

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a

1.12 eV

b

1.8 eV

c

2.0 eV

d

1.62 Ev

answer is C.

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Detailed Solution

Eg(eV)=1242λ(nm)=1242620=2eV
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