Figure shows a glass hemisphere placed on a white horizontal sheet .A vertical paraxial light beam of diameter d incident on the curved surface of hemisphere as shown.The diameter of the light spot formed on sheet after refraction from spherical surface 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

A paraxial beam is incident on a glass (n=1.5) hemisphere of radius R=6 cm in air as shown. The distance of point convergence F from the plane surface of hemisphere is :-

Parallel rays of light are falling on convex sphere surface of radius of curvature R = 20 cm as show. Refractive index of the medium is mu = 1.5 . A refraction from the spherical surface parallel rays

Find out the flux through the curved surface of a hemisphere of radius R if it is placed in a uniform electric field E as shown in figure

Figure shows a transparent hemisphere of radius 3.0 cm made of a material of refractive index 2.0. (a) A narrow beam of parallel rays is incident on the hemisphere as shown in the figure. Are the rays totally reflected at the plane surface ? (b) Find the image formed by the refraction at the first surface. (c) Find the image formed by the reflection or by the refraction at the plane surface. (d) Trace qualitatively the final rays as they come out of the hemisphere.

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 ray of light incident on the horizontal surface of a glass slab at 70^@ just grazes the adjacent vertical surface after refraction. Complete the critical angle and refractive index of glass.

A solid hemispherical bowl of radius R, made of glass, is placed on a flat horizontal surface with its curved surface on the ground. A small object is placed under the hemisphere at the center of the curved surface. If an observer sees the object directly above the plane surface, Where will the object appear to be ?

In figure, if a parallel beam of white light is incident on the plane of the slit, then the distance of the nearest white spot on the screen form O is [assume d lt lt D, lambda lt lt D ]

In the figure , if a parallel beam of white light is incident on the plane of the slits S_1 and S_2 then the distance of the nearest white spot on the screen from O is [ Assume D gtgtd, d gtgtlamda ]