Refraction Of Light

When a ray of light enters a glass slab from air

An isosceles prism of angle has a refractive index 1.44. Two parallel rays of monochromatic light enter the prism parallel to each other in air as shown. The rays emerging from the opposite face

A hollow double concave lens is made of very thin transparent material. It can be filled with air or either of two liquids having refracting indices respectively The lens will diverge a parallel beam of light if it is filled with

A diverging beam of light from a point source S having divergence angle falls symmetrically on a glass slab as shown. The angles of incidence of the two extreme rays are equal. If the thickness of the glass slab is t and its refractive index is n, then the divergence angle of the emergent beam is

A rectangular glass slab ABCD of refractive index is A rectangular glass slab ABCD of refractive index A ray of light is incident at the surface AB of the slab as shown. The maximum value of the angle of incidence such that the ray comes out only from the other surface CD, is given by

A ray of light passes through four transparent media with refractive indices and as shown in the figure. The surfaces of all media are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have

An observer can see through a pin-hole the top end of a thin rod of height A, placed as shown in the figure. The beaker height is 3h and its radius h. When the beaker is filled with a liquid up to a height 2h, he can see the lower end of the rod. Then the refractive index of the liquid is

The size of the image of an object, which is at infinity, as formed by a convex lens of focal length 30 cm is 2 cm. If a concave lens of focal length 20 cm is placed between the convex lens and the image at a distance of 26 cm from the convex lens, calculate the new size of the image.

A ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true ?

A transparent slab of thickness has a refractive index that increases with . Here is the vertical distance inside the slab, measured from the top. The slab is placed between two media with uniform refractive indices and , as shown in the figure. A ray of light is incident with angle from medium and emerges in medium with refraction angle with a lateral displacement Which of the following statement(s) is(are) true?