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A p-n photo diode is fabricated from a semiconductor with a bandgap of 5eV.  It can detect a signal of wavelength

a
2000A0
b
2480A0
c
4960A0
d
6000A0

detailed solution

Correct option is B

Wavelength : λ=12400E (in  ev)Ao=124005=2480Ao

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