Write some properties of electromagnetic waves. - Vidyadip

Question

Write some properties of electromagnetic waves.

✓

Answer

Some of the properties of electromagnetic waves are :
(i) They are transverse in nature.
(ii) They travel with the speed of light ( $c=3 \times$ $10^8 m / s$ ) in vacuum.
(iii) They do not need any material medium for their propagation.
(iv) They are produced by accelerated or oscillating charge.
(v) These are composed of perpendicular changeable electric and magnetic fields.
(vi) Energy of electromagnetic waves is equally divided between electric and magnetic field vectors.
(vii) They follow the principle of superposition.
(viii) Maximum and minimum magnitudes of $\vec{E}$ and $\overrightarrow{ B }$ are obtained at the same time and same place.

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

Explore more

More "3 Marks Question" from Electromagnetic Waves→Electromagnetic Waves — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

State Gauss᾿s theorem in electrostatics. Using this theorem, derive an expression for the electric field due to an infinitely long straight wire of linear charge density $\lambda$.

What is the power dissipated in an ac circuit in which voltage and current are given by $\text{V}=230\sin(\omega\text{t}+\frac{\pi}{2})$ and $\text{I}=10\sin\omega\text{t}?$

An object is placed at $ (i) 10 \ cm, (ii) 5 \ cm$ in front of a concave mirror of radius of curvature $15 \ cm$. Find the position, nature, and magnification of the image in each case.

Define half-life of a radioactive sample. Which of the following radiations: $\alpha-$rays, $\beta-$rays and $\gamma-$rays.

Are similar to X-rays.
Are easily absorbed by matter.
Travel with the greatest speed.
Are similar in nature to cathode rays?

A transformer has 50 turns in the primary and 100 in the secondary. If the primary is connected to a 220V DC supply, what will be the voltage across the secondary?

A bulb rated 60W at 220V is connected across a household supply of alternating voltage of 220V. Calculate the maximum instantaneous current through the filament.

Can two equipotential surfaces cut each other?

Sn, C, and Si, Ge are all group XIV elements. Yet, Sn is a conductor, C is an insulator while Si and Ge are semiconductors. Why?

The threshold frequency for certain metal is $3.3 \times 10^{14}$ Hz If light of frequency $8.2 \times 10^{14}$ Hz is incident on the metal, predict the cut-off voltage for photoelectric emission.

Define magnetic susceptibility of a material. Name two elements, one having positive susceptibility and the other having negative susceptibility. What does negative susceptibility signify