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  • A photodiode is fabricated from a semiconductor with a band gap of <img alt="\mathrm{2.5\ eV}" sr

A \mathrm{p-n} photodiode is fabricated from a semiconductor with a band gap of \mathrm{2.5\ eV}. It can detect a signal of wavelength

Option: 1

\mathrm{6000 \ \AA }


Option: 2

\mathrm{4000\ nm}


Option: 3

\mathrm{6000\ nm}


Option: 4

\mathrm{4000\ \AA }


Answers (1)

best_answer

\mathrm{E=\frac{h c}{\lambda} \Rightarrow \lambda=\frac{12400}{E(e v)}=\frac{12400}{2.5}=4960 \AA}

Posted by

avinash.dongre

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