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A photodetector used to detect the wavel...

A photodetector used to detect the wavelength of 1700 nm, has energy gap of about

A

0.073 eV

B

1.2 eV

C

7.3 eV

D

0.73 eV

Text Solution

Verified by Experts

The correct Answer is:
D
Energ = `(hc)/(lambda)`
`=(6.6xx10^(-34)xx3xx10^(8))/(1700xx10^(-9)xx1.6xx10^(-19))eV`
`=0.73eV`
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