Question

If the refractive index of two media are equal, then

Answer 1

Refractive Index:

1. Refractive Index is the ratio of the speed of light in a vacuum to that in a second medium of more density.
2. This variable is denoted by the letter $n$.

Explanation:

1. If the refractive index is the same for two mediums, then the light wave will travel in a straight line without any bending.
2. According to Snell's law

$$\begin{gathered} n_1\sin \left({\theta }_1\right)=n_2\sin \left({\theta }_2\right), \\ if{n}_1=n_2 \\ \Rightarrow {\theta }_1={\theta }_2 \end{gathered}$$, where ${\theta }_1$ is the angle of incidence,${\theta }_2$ is the angle of refraction.$n_1,n_2$ are refractive indices.

​Hence, If the refractive index of two media are equal, then light ray will continue the path without refraction.