Physics · 2021
JEE Main · 4 August 2021, Shift 2 · Q1
A p-type semiconductor has accepter levels 60 meV above the valence band. What will be the maximum wavelength of em wave which can create a hole?…
A p-type semiconductor has accepter levels $\displaystyle 60$ meV above the valence band. What will be the maximum wavelength of em wave which can create a hole ? (Plank's constant $\displaystyle =4.14 \times 10^{-15} \mathrm{eV}$-s, Speed of light in vacuum $\displaystyle =3 \times 10^8 \mathrm{~ms}^{-1}$ )
Official answer
(1)
$\displaystyle 20.7 \mu \mathrm{~m}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.