When an $n$-type semiconductor is heated,

The rate of recombination or generation of charge carriers in a semiconductor is governed by the law$(s)$ of:

Which impurity is doped in $Si$ to form an $N$-type semiconductor?

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

The charge on a hole is equal to the charge of

$A$ semiconductor has equal electron and hole concentration of $6 \times 10^8 \, m^{-3}$. On doping with a certain impurity,the electron concentration increases to $9 \times 10^{12} \, m^{-3}$. The new hole concentration is: