List of top Physics Questions on Extrinsic Semiconductor asked in CBSE Class XII

Assertion (A) : The conductivity of an n-type semiconductor is higher than that of a p-type semiconductor at a given temperature. Reason (R) : The electrons being in the conduction band in n-type semiconductor are more mobile than the holes in the valence band in p-type semiconductor.

Write two points of difference between intrinsic and extrinsic semiconductors.

Suppose a pure Si crystal has \(5\times10^{28}\) atoms per \(\text{m}^3\). It is doped with \(5\times10^{22}\) atoms per \(\text{m}^3\) of Arsenic. Calculate the majority and minority carrier concentration in the doped silicon. Given: \[ n_i=1.5\times10^{16}\,\text{m}^{-3} \]

Write two points of difference between intrinsic and extrinsic semiconductors.

Suppose a pure Si crystal has \(5\times10^{28}\) atoms per \(\text{m}^3\). It is doped with \(5\times10^{22}\) atoms per \(\text{m}^3\) of Arsenic. Calculate the majority and minority carrier concentration in the doped silicon. Given: \[ n_i=1.5\times10^{16}\,\text{m}^{-3} \]