MCQ
On what basis is the classification of electromagnetic waves done?
  • A
    Electromagnetic spectrum
  • B
    Electric field
  • C
    Magnetic field
  • D
    Propagation constant

Answer

  1. Electromagnetic spectrum

Explanation:

The classification of electromagnetic waves done according to the frequency called the electromagnetic spectrum. The basic difference various type of electromagnetic waves lies in their wavelength or frequency since all of them travel through vacuum at the same speed and also, the waves differ in their mode of interaction with matter.

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 wave front due to a source situated at infinity is:
Which one of the following is similar between electrostatic force and gravitational force?
The equation of a light wave is written as $\text{y}=\text{A}\ \sin(\kappa\text{x}-\omega\text{t}).$ Here, y represents:
  1. Displacement of either particles.
  2. Pressure in the medium.
  3. Density of the medium.
  4. Electric field.
An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E. The direction of electric field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest in it through the same vertical distance h. The time of fall of the electron, in comparison to the time of fall of the proton is:
Statement-1: NOT gate is also called invertor circuit.

Statement-2: NOT gate inverts the input order.

Consider a region inside which there are various types of charges but the total charge is zero. At points outside the region:
An electric line of force in the xyplane is given by equation x+ y= 1. A particle with unit positive charge, initially at rest at the point x = 1, y = 0 in the xyplane.

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current, if it dissipates 22.5 W, the resistance of fuse wire will be

(a) Zero

(b) 10 Ω

(c) 1 Ω

(d) 0.10 Ω

The mass number of a nucleus is:
A circular loop of area 1cm2, carrying a current of 10A, is placed in a magnetic field of 0.1T perpendicular to the plane of the loop. The torque on the loop due to the magnetic field is: