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A light ray is travelling from air to glass.The reflected and refracted rays are perpendicular to each other.If the angle of incidence in air is i.the refractive index of glass is?

A light ray is travelling from air to glass.The reflected and refracted rays are perpendicular to each other.If the angle of incidence in air is i.the refractive index of glass is?

Grade:12

3 Answers

Karan Tewani
31 Points
8 years ago
According to brewsters law, when a ray of light is incident on optical medium, and undergoes simultaneous reflection and refraction such that the reflected and refracted rays are perpendicular then those rays are plane polaroized and the refrative index of second media with respect to first media is equal to the tangent of angle of incidence. In this case, the answer is tan i
G.Rajashekar
41 Points
8 years ago

we can get the answer by using snells law:  na*sin(i)=nb*sin(r).

37 Points
8 years ago

By snell''s law nasin(i)=nbsin(90-i)

                             sin(i)=nbCos(i)  (na=1)

                      sin(i)/Cos(i)=nb

nb=Tan(i)

        The refractive index of glass is Tan(i)

 

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