# NEET Physics Semiconductor Electronics Questions Solved

The contribution in the total current flowing through a semiconductor due to electrons and holes are $\frac{3}{4}$ and $\frac{1}{4}$ respectively. If the drift velocity of electrons is $\frac{5}{2}$ times that of holes at this temperature, then the ratio of concentration of electrons and holes is
(a) 6 : 5                 (b) 5 : 6
(c) 3 : 2                 (d) 2 : 3

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