MCQ
Energy bands in solids are a consequence of
  • A
    Ohm's Law
  • Pauli's exclusion principle
  • C
    Bohr's theory
  • D
    Heisenberg's uncertainty principle

Answer

Correct option: B.
Pauli's exclusion principle
Formation of energy bands in solids are due to Pauli's exclusion principle.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A small sphere of mass $m$ is dropped from a great height. After it has fallen $100 m$, it has attained its terminal velocity and continues to fall at that speed. The work done by air friction against the sphere during the first $100 m$ of fall is
The temperature coefficient of resistance for a wire is $0.00125 /{ }^{\circ} \mathrm{C}$. At $300 \mathrm{~K}$ its resistance is $1 \mathrm{ohm}$. The temperature at which the resistance becomes $2 \mathrm{ohm}$ is
Even Carnot engine cannot give $100 \%$ efficiency because we cannot
The maximum and minimum distances of a comet from the sun are $8 \times 10^{12} \mathrm{~m}$ and $1.6 \times 10^{12} \mathrm{~m}$. If its velocity when nearest to the sun is $60 \mathrm{~m} / \mathrm{s}$, what will be its velocity in $\mathrm{m} / \mathrm{s}$ when it is farthest
If the angle of prism is $60^{\circ}$ and the angle of minimum deviation is $40^{\circ}$, the angle of refraction will be
In the lowest energy level of hydrogen atom, the electron has the angular momentum
Two walls of thicknesses $d$ and $d$ and thermal conductivities $k$ and $k$ are in contact. In the steady state, if the temperatures at the outer surfaces are $T_1$ and $T_2$, the temperature at the common wall is
A sample of ideal monoatomic gas is taken round the cycle $A B C A$ as shown in the figure. The work done during the cycle is
Image
A coil of $100$ turns and area $5$ square centimetre is placed in a magnetic field $\mathrm{B}=0.2 \mathrm{~T}$. The normal to the plane of the coil makes an angle of $60^{\circ}$ with the direction of the magnetic field. The magnetic flux linked with the coil is
When an ideal gas $(\gamma=5 / 3)$ is heated under constant pressure, then what percentage of given heat energy will be utilised in doing external work