Name: General Terms Related to Spherical Mirrors
Uploaded: 2019-07-19
Duration: 6 min 40 s
Description: In the study of science, there are often new terms to learn. Join us to learn the different terms and definitions related to curved mirrors.

Question

Draw a ray diagram of refraction of light through a rectangular glass slab.

Accepted Answer

The change in the direction of light when it passes from one medium to another is known as the refraction of light. The following diagram represents the refraction of light through a rectangular glass slab.

On entering into the glass medium from the air, the light ray bends towards the normal. That means the light ray gets refracted on entering the glass medium. After the refraction, this ray now travels through the glass slab. Then it comes out of the glass slab by refraction from the other interface boundary. When the ray goes from glass medium to air it again gets refracted and bends away from normal. Here, the incident ray and the emergent ray are parallel to each other. Here, $i (i_{1} & i_{2})$ is the angle of incidence, $r$ is the angle of refraction and $e$ is the angle of emergence. Since emergent ray and incident ray are parallel to each other, the angle of incidence and angle of emergence are equal. The perpendicular distance between the original path of the incident ray and the emergent ray coming out of a glass slab is known as lateral displacement.

Draw a ray diagram of refraction of light through a rectangular glass slab.

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