The defect of myopia can be corrected by using

The band of colours that we get when white light splits into its components is known as the

Refractive index of Glycerine is

Ultraviolet rays help to produce vitamin

Name the scientist who is often considered as father of modern physics

The defect of hypermetropia may be corrected by using

When the light travels along the normal

The phenomenon in which electrons are released from matter on absorption of light energy is called

Which of the following lens is thicker in the middle and thinner at the edges ?

The eye lens is held in position by a pair of muscles called