Question
Write any four characteristics of electromagnetic wave.
✓
Answer
(i) Electromagnetic waves do not require any material medium for their propagation.
(ii) Electromagnetic waves travel in a straight line.
(iii) The nature of electromagnetic waves is transverse.
(iv) The properties of the medium in which electromagnetic waves travel remain unchanged.
(ii) Electromagnetic waves travel in a straight line.
(iii) The nature of electromagnetic waves is transverse.
(iv) The properties of the medium in which electromagnetic waves travel remain unchanged.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A convex lens of focal length f1 is kept in contact with a concave lens of focal length f2. Find the focal length of the combination.
Discuss $p-n$ junction diode under forward bias.
→Write the definition of electrostatic potential. Tell whether it is a vector or a scalar quantity ? Also write its SI unit and dimensional formula.
Find the area bounded by the curve y = e-x, the X-axis and the Y-axis.
In the upper wire is made of steel and the lower of copper. The wires have equal cross-section. Find the ratio of the longitudinal strains developed in the two wires.
A point source is placed at a depth h below the surface of water (refractive index = μ).
- Show that light escapes through a circular area on the water surface with its centre directly above the point source.
- Find the angle subtended by a radius of the area on the source.
Derive $\varepsilon= B l \cup$ for motional electromotive force.
→Draw typical output characteristics of an n-p-n transistor in CE configuration. Show how these characteristics can be used to determine output resistance.
Find the equivalent resistance of the network shown in figure. between the points a and b.
Two positive point charges $12 \mu C$ and 5 $\mu C$ are present in air at a distance of 10 cm from each other. Calculate the work required to bring them closer to 4 cm .
→