When the temperature of a semiconductor increases,then:

Which statement is correct regarding the charge of doped semiconductors?

In a semiconductor,the concentrations of electrons and holes are $8 \times 10^{18} \, m^{-3}$ and $5 \times 10^{18} \, m^{-3}$ respectively. If the mobilities of electrons and holes are $2.3 \, m^2/V \cdot s$ and $0.01 \, m^2/V \cdot s$ respectively,then the semiconductor is:

An intrinsic semiconductor is electrically neutral. An extrinsic semiconductor having a large number of current carriers would be:

In the energy band diagram of a material shown below,the open circles and filled circles denote holes and electrons respectively. The material is a/an

$A$ $P$-type semiconductor has acceptor levels $57 \, meV$ above the valence band. The maximum wavelength of light required to create a hole is (Planck's constant $h = 6.6 \times 10^{-34} \, J-s$, speed of light $c = 3 \times 10^8 \, m/s$, charge of electron $e = 1.6 \times 10^{-19} \, C$)