QAIPM-2011-Ph-1825: NEET 2011 Physics - Class 12 AIPM-2011-Ph-1825 Solution: Pure Si at 500 K has equal number of electron (\(n_e\)) and…

Pure Si at 500 K has equal number of electron ($n_e$) and hole ($n_h$) concentrations of $1.5 \times 10^{16}\ \text{m}^{-3}$. Doping by indium increases $n_h$ to $4.5 \times 10^{22}\ \text{m}^{-3}$. The doped semiconductor is of p-type having electron concentration $n_e = 5 \times 10^9\ \text{m}^{-3}$ n-type with electron concentration $n_e = 5 \times 10^{22}\ \text{m}^{-3}$ p-type with electron concentration $n_e = 2.5 \times 10^{10}\ \text{m}^{-3}$ n-type with electron concentration $n_e = 2.5 \times 10^{23}\ \text{m}^{-3}$