A light ray is incident at an angle 45∘ on parallel sided glass slab and emerges out grazing the vertical surface. The refractive index of the slab is

A light ray travelling in a medium of refractive index mu_(1) is incident on a parallel faced glass slab making an angle of theta with the glass surface. The refractive index of the medium on the other side of the glass slab is mu_(3) ( gt mu_(1)) . Find the angular deviation suffered by the light ray.

A ray of light is incident at an angle of incidence 45^@ on an equilateral prism and emerge at an angle 45^@ then the refractive index of the medium of the prism is:

A ray of light incident on the horizontal surface of a glass slab at 70^@ just grazes the adjacent vertical surface after refraction. Complete the critical angle and refractive index of glass.

A ray of light is incident on a parallel-sided glass slab as shown in the figure. The angle of refraction for this ray of light is likely to be :

A light ray is incident at 45^(@) on a glass slab. The slab is 3cm thick, and the refractive index of the glass is 1.5 . What will the displacement of the ray be as a result of its passage through the slab? At what angle will the ray emerge formn the slab?

In an isosceles prism of prism angle 45^(@) , it is found that when the angle of incidence is same as the prism angle, the emergent ray grazes the emergent surface. Find the refractive index of the material of the prism.For what angle of incidence the angle of deviation will be minimum ?

Light is incident at an angle i on a glass slab. If the reflected ray is completely polarised , then the angle of refraction is

Light is incident at an angle i on a glass slab. The reflected ray is completely polarished . The angle of refraction is