Question

A ray of light travelling in air is incident on the plane of a transparent medium. The angle of incidence is 45° and that of refraction is 30°. Find the index of the medium.

विकल्प

• 2

• `1/sqrt2`

• `2/sqrt2`

• `sqrt2`

Answer 1

`bb(sqrt2)`

Explanation:

Using Snell's law:

μ = `(sin 45°)/(sin 30°)`

= `(1/sqrt2)/(1/2)`

= `sqrt2`