Question

The speed of light is 0.6 times that of its speed in vacuum. The refractive index of the medium is

Answer 1

Answer:

1.66

Explanation:

Let the refractive index of the medium be n

⇒ n = c/v (c is the speed of light in  the vacuum and v is the speed of light in that medium)

⇒ n = (3 × 10⁸) / 0.6 × 3 × 10⁸

∴ n = 30/18 = 1.66

Answer 2

Answer:

1.66 is the answer.

Explanation:

by n = c/v