Question

laws of refraction of light​

Answer 1

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The angle of incidence is the angle between the incident ray and the normal; denoted as ‘i’. The angle of refraction is the angle between the refracted ray and the normal; denoted as ‘r’. Laws of refraction state that:

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

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

Answer 2

The laws are --------

(i) The incident ray , the refracted ray and the normal at the point of incidence all lie in the same plane .

(ii)The ratio of sine of angle of incidence to the sine of angle of refraction is constant for a given pair of media . This law is also called snell's law .

sin i/sin r = constant

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