A ray of light travelling in air is incident on a parallel-sided glass slab(or rectangular glass slab). Draw a ray-diagram indiciating the change in its path in glass.

A ray of light travelling in air is incident on a rectangular glass slab. What will happen?

A beam of light travellig in a reactangular glass slab emerges into air. Draw a ray-diagram indicating the change in its path.

A ray of light falls normally on a rectangular glass slab. Draw a ray diagram showing the path of the ray till it emerges out of the slab.

A ray of light travelling in air is incident on the surface of glass slab at an angle of 40^(@) . If the ray is deviated through 18^(@) , determine critical angle for the glass-air interface.

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 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 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