When phosphorus and antimony are mixed in germanium,then:

When the temperature of a semiconductor increases,then:

If the ratio of the number density of electrons to the number density of holes in a semiconductor is $7/5$ and the ratio of their currents is $7/4$,what is the ratio of their drift velocities?

In a junction diode,the holes are due to

At room temperature,a $p$-type semiconductor has

In a $P$-type semiconductor, the acceptor level is $57 \text{ meV}$ above the valence band. What is the maximum wavelength of light (in $\mathring{A}$) required to create a hole?