Question

state the laws of refraction. what is the meaning of the refractive index of crown glass is 1.52"?

Answer 1

The laws of refraction are

1)The incident ray, reflected ray and the normal, to the interface of any two given mediums. They should  all lie in the same plane.

2)The ratio of the sine of the angle of incidence and sine of the angle of refraction is constant.

The refractive index of crown glass is 1.52. This means that light travels in air 1.52 times faster than it does in crown glass.

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Answer 2

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