Physics · 2009
NEET 2009 · Prelims · Code A · Q48
A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength:
A $\displaystyle p-n$ photodiode is fabricated from a semiconductor with a band gap of $\displaystyle 2.5$ eV. It can detect a signal of wavelength :
Official answer
(1)
$\displaystyle 4000 \AA$
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