Question

The velocity of light in a medium is 2 10 m/s. What is the refractive
index of the medium with respect to air, if the velocity of light in air is
3 x 10 m/s?
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Answer 1

Answer:

The refractive index of the medium with respect to air is 1.5

Explanation:

Answer 2

Given,

The velocity of light in a medium = 2 * 10⁸ m/s

Velocity of light in air = 3 * 10⁸ m/s

To find,

We have to find the refractive index of the medium with respect to air.

Solution,

The refractive index of the medium with respect to air is 1.5.

We can simply find the refractive index of the medium with respect to air by the formula,

              μ = c/v

where μ is the refractive index, c is the speed of light in air, v is the speed of light in any other medium.

              μ = 3 * 10⁸/ 2 * 10⁸

                μ = 1.5

Hence, the refractive index of the medium with respect to air is 1.5.