MCQ
The expected energy of the electrons at absolute zero is called
  • Fermi energy
  • B
    Emission energy
  • C
    Work function
  • D
    Potential energy

Answer

Correct option: A.
Fermi energy
a
(a)The highest energy level which an electron can occupy in the valence band at $ 0$  $K,$  is called Fermi energy level.

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 tuning fork of frequency $100$ when sounded together with another tuning fork of unknown frequency produces $2$ beats per second. On loading the tuning fork whose frequency is not known and sounded together with a tuning fork of frequency $100$ produces one beat, then the frequency of the other tuning fork is
For adjoining fig., The magnetic field at point, $P$ will be
The electric field at $20 \,cm$ from the centre of a uniformly charged non-conducting sphere of radius $10 \,cm$ is $E$. Then at a distance $5 \,cm$ from the centre it will be
The dimensional formula of angular impulse is :
The motion of a particle as per $x=Asin \omega t + Bcos\omega t$ is :-
A uniform disc of mass $M$ and radius $R$ is suspended in vertical plane from a point on its periphery. Its time period of oscillation is ........
Two bodies $A$ and $B$ of same mass, area and surface finish with specific heats $S_A$ and $S_B\left(S_A > S_B\right)$ are allowed to cool for given temperature range. Temperature varies with time as ..........
A square loop of side $5 \,cm$ enters a magnetic field with $1$ cms $-1$. The front edge enters the magnetic field at $t = 0$ then which graph best depicts emf
A small ball of mass $m$ is thrown upward with velocity $u$ from the ground. The ball experiences a resistive force $mkv ^{2}$ where $v$ is its speed. The maximum height attained by the ball is 
A body rotating with an angular speed of $600\, {rpm}$ is uniformly accelerated to $1800 \,{rpm}$ in $10\; sec$. The number of rotations made in the process is ..... .