Total internal reflection

When a light beam exits from an optically denser medium into a less dense medium, the angle of refraction will increase faster than the angle of incidence. But the angle of refraction cannot be more than 90°. Therefore, at large angles of incidence, light will be completely reflected from the interface between the two media. This phenomenon is called total internal reflection. It is used in fiber optic cables and other optical devices.
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[@varshneydevansh]

You are doing a great job

[@RajjSumit]

thank you really appreciated

[@roneet9027]

Wow that bending looks like Avatar light bending