The inner surface of the wall of a sphere is perfectly reflecting. Radius of the sphere is R. A point source S is placed at a distance `R//2` from the centre of the sphere. Consider the reflection of light from the farthest wall followed by reflection from the nearest wall. Where is the image of the source? Consider paraxial rays only.

The internal surface of the walls of a sphere is specular (i.e. reflecting). The radius of the sphere is R = 36 cm . A point source S is placed at a distance R//2 from the centre of the sphere and sends light to the remote part of the sphere. Where will the image of the source be after two successive reflection from the remote and then the nearest wall of the sphere ? How wil the position of the image change if the source sends light to the nearest wall first ? Consider paraxial rays.

The internal surface of the walls of a sphere is specular. The radius of the sphere is R=36cm. A point source S is placed at a distance R//2 from the cneter of the sphere and sends light to the remote part of the sphere. Where will the image of the source be after two successive reflections from the remote and then nearest wall of the sphere? How will the position of the image change if the source sends light to the nearest wall first?Consider paraxial rays.

The internal surface of the walls of a sphere is specular. The radius of the sphere is R=36cm. A point source S is placed at a distance R//2 from the cneter of the sphere and sends light to the remote part of the sphere. Where will the image of the source be after two successive reflections from the remote and then nearest wall of the sphere? How will the position of the image change if the source sends light to the nearest wall first?Consider paraxial rays.

The potential at a distance R//2 from the centre of a conducting sphere of radius R will be

The radius of gyration of a solid sphere of radius about a certain axis is r. The distance of that axis from the centre of the sphere is

A hallow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre: