The forbidden energy gap in the energy bands of germanium at room temperature is about $......$ $eV$.

When a semiconductor is heated,its resistance

Choose the $FALSE$ statement from the following.

Choose the correct statement. In conductors,

The energy gap of silicon is $1.1 \, eV$. At what wavelength will silicon stop absorbing photons? (in $\mathring A$)

Carbon, silicon, and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by $(E_g)_C$, $(E_g)_{Si}$, and $(E_g)_{Ge}$ respectively. Which one of the following relationships is true in their case?