MCQ
The polarisation is measured in:
  • A
    Cm
  • B
    Cm2
  • C
    C/m2
  • D
    None

Answer

  1. C/m2

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 energy of hydrogen atom in its ground state is – 13.6 eV. The energy of the level corresponding  to the quantum number n is equal 5 is

(a) – 5.40 eV

(b) – 2.72 eV

(c) – 0.85 eV

(d) – 0.54 eV

In Young’s double slit experiment, the distance between the two slits is made half, then the fringe width will become

(a) Half

(b) Double

(c) One fourth

(d) Unchanged

If the central portion of a convex lens is wrapped in black paper as shown in the figure

(a) No image will be formed by the remaining portion of the lens

(b) The full image will be formed but it will be less bright

(c) The central portion of the image will be missing

(d) There will be two images each produced by one of the exposed portions of the lens

Two source S1 and S2 of intensity I1 and I2 are placed in front of a screen [Fig. (a)]. The patteren of intensity distribution seen in the central portion is given by Fig. (b).

In this case which of the following statements are true.
Range of wavelength of X-rays is:

A convex mirror has a focal length f. A real object is placed at a distance f in front of it from the pole produces an image at

(a) Infinity

(b) f

(c) f/2

(d) 2f

A semiconductor is doped with a donor impurity:
  1. The hole concentration increases.
  2. The hole concentration decreases.
  3. The electron concentration increases.
  4. The electron concentration decreases.
Light waves travel in vacuum along the X-axis. Which of the following may represent the wavefronts?
  1. x = c.
  2. y = c.
  3. z = c.
  4. x + y + z = c.

A current of two amperes is flowing through a cell of e.m.f. 5 volts and internal resistance 0.5 ohm from negative to positive electrode. If the potential of negative electrode is 10V, the potential of positive electrode will be

(a) 5 V

(b) 14 V

(c) 15 V

(d) 16 V

Consider the situation of figure. The work done in taking a point charge from P to A is WA, from P to B is WB and from P to C is WC.

  1. WA < WB < WC
  2. WA > WB > WC
  3. WA = WB = WC
  4. None of these.