List of top Physics Questions on band theory of solids

In a silicon crystal containing $N$ atoms, at absolute zero the $4N$ energy states of
Semiconductors are
The band gap energy of silicon is
Who said, “Number of transistors per square inch on integrated circuits double every year…”?
The energy required to break the covalent bond in a semiconductor is:
In semiconductors at room temperature,
A charge q is located at the centre of a cube. The electric flux through any face is
A man crosses a 320 m wide river perpendicular to the current in 4 min. If in still water he can swim with a speed 5/3 times that of the current, then the speed of the current, in m/min is
A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by \(1\ \text{m/s}\) so as to have the same kinetic energy as that of the boy. The original speed of the man is
For germanium crystal, the forbidden energy gap in joules is:
A p-type semiconductor has acceptor levels 57 meV above the valence band. The maximum wavelength of light required to create a hole is:
The energy gap between the valence and conduction bands of an insulator is about:
There are 20 naturally occurring amino acids. The maximum number of tripeptides that can be obtained is
The majority charge carriers in a p-type semiconductor are: