In the figure, you can see a light ray travelling from air to glass. Why is there no refraction?

When a light wave travels from air to glass :

A ray of light travelling obliquely from glass to air :

A ray travelling from glass to air, bends away from the normal. ____

Why can't we see air ?

Refractive index of a glass as light ray passes from air to glass is given by n=(sini)/(sinr) . In a centain experiment , I and r ware found to be 45^@ pm3^@ and 30^@pm3^@ , then error in n is nearly

In Figure, a ray of light A incident from air suffers partial reflection and refraction at the boundary of water. (a) Complete the diagram showing (i) the reflected ray B and (ii) the refracted ray C. (b) How are the angles of incidence i and refraction r related ?

A transparent thin film of uniform thickness and refractive index n_(1) =1.4 is coated on the convex spherical surface of radius R at one end of a long solid glass cylinder of refractive index n_(2) =1.5 , as shown in the figure. Rays of light parallel to the axis of the cylinder traversing through the film from air to glass get focused at distance f_(1) from the film, while rays of light traversing from glass to air get focused at distance f_(2) from the film, Then

A certain monochromatic light travelling in air is incident on a glass plate at a polarising angle. Angle of refraction in glass is found to be 32^(@) Calculate : (i) the polarising angle, (ii) refractive index of glass.

When a ray of light enters a glass slab from air

The time taken by a monochromatic light to travel a certain distance in air in 9 xx 10^(-6) seconds. The time taken by the light ray to travel the same distance in water of refractive index (4)/(3) is