1.

What are electromagnetic waves? Write the expression for the velocity of electro magnetic waves in terms of permittivity and magnetic permeability of free space.

Answer»

The waves in which there are a sinusoidal variation of electric & magnetic field vectors at right angles to each other & also right angle to the direction of propagation of the wave is called e.m waves.

∴ The expression for velocity of e.m. wave is

C = \(\frac{1}{\sqrt{\mu_0 \varepsilon_0}}\)

Where µ0 → is permeability of free

space, ε0 → is the permeability of free space.



Discussion

No Comment Found

Related InterviewSolutions