Name: Total Internal Reflection From Prism
Uploaded: 2019-07-19
Duration: 1 min 56 s
Description: You must have seen reflectors on a bicycle. Why are they attached to the mudguards? What use do they have? Let’s watch this video on reflectors to find out.

Question

Complete the given figure below to show the path of the ray of single colour as it enters the prism and emerges out of it. Mark the angles wherever necessary.

Accepted Answer

The shift in the direction of the path of light, when it moves from one transparent medium to another transparent medium, is named the refraction of light.
When a ray of light from the air goes into a denser medium, the ray of light turns towards the normal. As the speed of light drops in the denser medium, it inclines towards the normal.
A glass prism is a transparent material having two triangular edges and three rectangular sides. The refraction of light in a glass prism is distinct from a glass slab. In a glass prism, the incident ray of light is not parallel to an emergent ray of light.
When a light ray crosses from a less dense material (e.g., air) into a denser material (e.g., glass or water), it is bent away from the surface between the two materials. This means that the refraction angle is always less than the angle of incidence in this situation.
When a light ray crosses from a denser material (e.g., water or glass) into a less dense material (e.g., air), it is bent towards the surface between the two materials. This means that the refraction angle is always more significant than the angle of incidence in this situation.

The diagram in the given in the above figure represents the path of the ray of single colour which is entering in the prism. The angle of incidence is given in the diagram as $20 °$ .

Complete the given figure below to show the path of the ray of single colour as it enters the prism and emerges out of it. Mark the angles wherever necessary.

Important Questions on Refraction of Light at Plane Surfaces

Learn and Prepare for any exam you want !