Question

Define total internal reflection of light. Name the devices in which
in which tota
internal reflection of light is used.
​

Answer 1

Explanation:

Total internal reflection is a reflection in which angle r is more than 90 degree

Answer 2

Answer: Total Internal Reflection

Explanation:

The total reflection of light travelling in a medium of higher refractive index when it is incident on the boundary with another medium of power refractive index at an angle greater than the critical angle** is called total Internal reflection.

Device - Telescope, Microscope, Binoculars, Spectroscopes, Periscopes.

**Critical angle : If angle of incidence i increases , the angle of refraction r increases. For a particular value of i , called critical angle , the angle of refraction becomes 90°. The refracted Ray comes out parallel to the surface separating two media.