Does refraction take place for a ray while entering a glass slab normal to it ?

When light rays enter from one medium to another, refraction takes place. Consider refraction of light at a spherical surface separating two media of refractive indices n and n_2 (n_2 > n_1) .In the above case let the first medium be air and the second medium glass of refractive index 1.5, R of spherical surface = 20cm. An object is placed in air 100cm from the glass surface. At what position the image is formed?

When light rays enter from one medium to another, refraction takes place. Consider refraction of light at a spherical surface separating two media of refractive indices n_1 and n_2 (n_2 > n_1) . With the help diagram derive refraction formula .

In terrestrial organisms like birds and reptiles, internal fertilization take place While some aquatic organisms show external fertilisation What is the disadvantage of external fertilization

In terrestrial organisms like birds and reptiles, internal fertilization take place While some aquatic organisms show external fertilisation Name any two organisms showing external fertilization

A ray of light undergoes refraction when it enters from air to glass. Critical angle for glass - liquid boundary is sin^1 (8/9). Determine the speed of light in liquid if speed of light in glass is 2x10^8 m/s .

A beam of light passing from one transparent me dium to another obliquely, undergoes an abrupt change in direction. This phenomenon is known as refraction of light.Draw a figure, which shows refraction through a parallel sided glass slab (Ray passing from air)

A ray of light undergoes refraction when it enters from air to glass.A picture is painted with blue, green and red colours. A glass slab is placed on this picture. Will the images of all these colours lie in the same plane in the slab when viewed from the top of the glass slab? Why?