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A p-n photodiode is fabricate from a sem...

A `p-n` photodiode is fabricate from a semiconductor with a band gap of `2.5eV`. It can detect a singal of wavelength

A

6000 Å

B

4000nm

C

`6000nm`

D

4000Å

Text Solution

Verified by Experts

The correct Answer is:
D
`lambda_(max)=(1242)/(E(eV))nm=(1242)/(2.5)=496.8nm=4968` Å
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