Question

The velocity of e.m wave in a dielectric medium (Er = 4) is

विकल्प

• 3 × 10⁸ m/s

• 1.5 × 10⁸ m/s

• 6 × 10⁸ m/s

• 7.5 × 10⁷ m/s

Answer 1

7.5 × 10⁷ m/s

Explanation:

In a dielectric medium, the velocity of an em wave is 7.5 × 10⁷ m/s. The velocity of electromagnetic waves propagating through a dielectric medium is always greater than the velocity of electromagnetic waves propagating through a vacuum.