Question

define refraction of light.state snell's law of refraction of light

Answer 1

REFRACTION OF LIGHT :-

Refraction is the change in direction of wave propagation due to a change in its transmission medium.

According to the Snell's law,

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

sine of angle of incidence(i)/sine of angle of refraction(r)=constant

this constant is called refractive index(n).

n=sin i/sin r

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