A charged particle having drift velocity of $7.5 \times 10^{-4}\, ms ^{-1}$ is an electric field of $3 \times 10^{-10}\, Vm ^{-1}$ has a mobility in $m ^{2} V ^{-1} s ^{-1}$ of
NEET 2020, Easy
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$\mu=\frac{v_{d}}{E}=\frac{7.5 \times 10^{-4}}{3 \times 10^{-10}}$
$=2.5 \times 10^{6}$
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