A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength
Text Solution
Verified by ExpertsThe correct answer is:
D
Only signal having wavelength less than threshold wavelength will be detected.
Substituting the value of 
and E in the above equation
As 
Signal of wavelength 
can be detected by the photodiode
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