Physics · 2021
JEE Main · 22 July 2021, Shift 2 · Q18
Consider a situation in which reverse biased current of a particular P-N junction increases when it is exposed to a light of wavelength ≤ 621 nm.…
Consider a situation in which reverse biased current of a particular P-N junction increases when it is exposed to a light of wavelength $\displaystyle \leq 621 \mathrm{~nm}$. During this process, enhancement in carrier concentration takes place due to generation of hole-electron pairs. The value of band gap is nearly.
Official answer
(2)
$\displaystyle 2$ eV
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.