MCQ
Dipole moment depends on _______?
  • A
    Charge only.
  • B
    Charge and length of a dipole.
  • C
    Charge, length of a dipole and dielectric constant of the medium.
  • D
    Charge and dielectric constant of the medium.

Answer

  1. Charge and length of a dipole.

Explanation:

Dipole is defined as two equal but opposite charges, kept at a small distance and having a dipole moment. The dipole moment is simply the product of the electric charge and length of the dipole. The dielectric constant of the medium doesn’t affect the dipole moment i.e. dipole moment of an electric dipole will be the same in water as well as in the air.

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

Assertion  :   A direct current flows through a metallic rod, produced magnetic field only outside the rod.

Reason     : There is no flow of charge carriers inside the rod.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge:
Two wires A and B are made of same material. The wore A has a length l and diameter r while the wire B has a length 2l and diameter $\frac{\text{r}}{2}$. If the two wires are stretched by the same force, the elongation in A divided by the elongation in 8 is:

  1. $\frac{1}{8}$

  2. $\frac{1}{4}$

  3. $4$

  4. $8$

When light is refracted, which of the following does not change?
  1. Wavelepgth.
  2. Frequency.
  3. Velocity.
  4. Amplitude.
The pressure of an ideal gas is written as $\text{p}=\frac{2\text{E}}{3\text{v}}.$ Here E refers to:
  1. Translational kinetic energy.
  2. Rotational kinetic energy.
  3. Vibrational kinetic energy.
  4. Total kinetic energy.
Green light of wavelength 5460 $\stackrel{\circ}{A}$ is incident on an air-glass interface. If the refractive index of glass is 1⋅ 5, the wavelength of light in glass would be (Given that the velocity of light in air, $c =3 \times 10^8 m s ^{-1}$ )

In the disintegration series  the values of Z and A respectively will be

(a) 92, 236

(b) 88, 230

(c) 90, 234

(d) 91, 234

A potentiometer consists of a wire of length 4 m and resistance 10 W. It is connected to cell of emf 2 V. The potential difference per unit length of the wire will be

(a) 0.5 V/m

(b) 10 V/m

(c) 2 V/m

(d) 5 V/m

The maximum intensity of fringes in Young's experiment is I. If one of the slit is closed, then the intensity at that place becomes Io. Which of the following relation is true ?

(a) I = Io

(b) I = 2Io

(c) I = 4I

(d) There is no relation between I and Io

In a laser tube, all the photons: