A parallel beam of light is allowed to fall on a transparent spherical globe of diameter 30 cm and refractive index 1.5. The distance from the centre of the globe at which the beam of light can converge is ______ mm.

A parallel beam of light falls on a solid tranparent sphere. Q. Which is corret?

A narrow parallel beam of light falls on a glass sphere of radius R and refractive index mu at normal incidence. The distance of the image from the outer edge is given by-

A parallel beam of light is incident on the surface of a transparent hemisphere of radius R and refractive index 2.0 as shown in figure. The position of the image formed by refraction at the first surface is :

A circular beam of light (diameter d) falls on a plane surface of a liquid. The angle of incidence is 45^(@) and refractive index of the liquid is mu . The diameter of the refracted beam is

A parallel narrow beam of light is incident on the surface of a transparent hemisphere of radius R and refractive index mu=1.5 as shown. The position of the image formed by refraction at the image formed by refraction at the spherical surface only as

When a transparent parallel plate of uniform thickness t and refractive index mu is interposed normally in the path of a beam of light, the optical path is

AN unpolarised beam of light is incident at the polarising angle on the surface of a transparent medium of refractive index 1.6. The angle of refraction in the medium is