Ray Optics and ...

An experiment is performed to find the refractive index of glass using a travelling microscope. In this experiment distances are measured by:

The distance CP is the :

A printed page is seen through a glass slab place on it. The printed words appear raised. This is due to:

The instrument that is based on the principle that when an object is placed between first principal focus and the optic centre of convex lens, an upright, virtual and enlarged image on the same side of the object is formed, is:

The apparent vertical shift of the image of a coin placed at the bottom of a water tank having constant depth of water is proportional to (given refractive index of water =$$\mu$$).

A pencil dipped partially in water appears bent because of : 

The phenomenon due to which a ray of light .......... from its path while travelling from one optical medium to another optical medium is called refraction.

In the white light of sun, maximum scattering by the air molecules present in the earth's atmosphere is for:

Blue colour of  sky is due to:

Magnification of an optical instrument is expressed in: