Question
Identify the process in which an electron escapes from the metal surface.

Answer

  1. Electron emission
Explanation:
The process in which an electron escapes from the metal surface is known as electron emission. Electrons are loosely bound to the nucleus, and therefore, a little energy push sets these electrons flying out of their respective orbits.

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

The electrochemical equivalent Z of any element can be obtained by multiplying the electrochemical equivalent of hydrogen with(a) Atomic weight(b) Molecular weight(c) Chemical equivalent(d) A constant
       
A cylindrical rod magnet has a length of $5 \ cm$ and a diameter of $1 \ cm .$ It has a uniform magnetisation of $5.30 \times 10^3 \mathrm{Amp} / \mathrm{m}^3$. What its magnetic dipole moment
A bar magnet of length $10 \ cm$ and having the pole strength equal to $10^{-3}$ weber is kept in a magnetic field having magnetic induction $(B)$ equal to $4 \pi \times 10^{-3}$ Tesla. It makes an angle of $30^{\circ}$ with the direction of magnetic induction. The value of the torque acting on the magnet is $\left.\mu_0=4 \pi \times 10^{-7} \text { weber } / \text { amp } \times \mathrm{m}\right)$
In which of the following fields cathode rays show minimum deflection?
Eddy currents are produced when(a) A metal is kept in varying magnetic field(b) A metal is kept in the steady magnetic field(c) A circular coil is placed in a magnetic field(d) Through a circular coil, current is passed
 
 
 
 
When electromagnetic waves enter the ionised layer of ionosphere, then the relative permittivity i.e. dielectric constant of the ionised layer:
What is mainly measured by potentiometer ?
In the given circuit, the potential of the point $E$ is
Two charges are placed a certain distance apart in air. If a brass plate is introduced between them, the force between them will:
Two long wires are hanging freely. They are joined first in parallel and then in series and then are connected with a battery. In both cases, which type of force acts between the two wires (a) Attraction force when in parallel and repulsion force when in series(b) Repulsion force when in parallel and attraction force when in series(c) Repulsion force in both cases(d) Attraction force in both cases