Question

A beam of light passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three refractive indices n₁, n₂ and n₃?

 

Options

• `n_1 > n_2 > n_3`

• `n_1 > n_3 > n_2`

• `n_2 > n_3 > n_1`

• `n_2 > n_1 > n_3`

Answer 1

`underlinebb(n_2 > n_1 > n_3)`

Explanation:

Given, the path of rays through different mediums is shown below.

It is clear that, `theta_3 > theta_1 > theta_2` or `sintheta_3 > sintheta_1 > sintheta_2`

∴ `n_2 > n_1 > n_3`