Question

AB is a boundary separating two media of different refractive indices. A ray is incident on the boundary is partially reflected and partially transmitted. Choose the $CORRECT$ statement.

• A. $3$ is incident ray and $1$ is refracted ray
• B. $2$ is incident ray and $1$ is partially reflected ray
• C. $1$ is incident ray and $3$ is refracted ray
• D. $3$ is incident ray and $2$ is partially reflected ray

Answer 1

The correct option is C $1$ is incident ray and $3$ is refracted ray

$\begin{array}{c}{\mu }_1<{\mu }_2\\ \text{According to principle}\\ \text{of Total of internal}\\ \text{reflection ray must}\\ \text{come from denser}\\ \text{medium to rarer}\\ \text{medium so}\\ \text{1 is incident ray}\\ \text{and}3\text{is refracted}\\ \text{ray and}2\text{is}\\ \text{reflected ray.}\end{array}$