Question

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27 With the help of a ray diagram. State the meaning of refraction of light. State
law of refraction of light and also express it mathematically.
OR​

Answer 1

Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media. ... Refraction is responsible for image formation by lenses and the eye.

Answer 2

The change in direction of a wave passing from one medium to another is known as refraction of light .

LAWS: the incident ray, refracted ray and the normal lie on the same plane

The ratio of the sine of the angle of incidence to the sine of angle of refraction is always constant