A hemishperical surface of radius R and refractive index `mu = 1.5` is polished as shown. At what distance x from point P a point object O be placed so that its image coincides with the object itself?

A transparent sphere of radius R and refractie index mu is kept in air. At what distance from the surface of the sphere shold a point object be placed so as to form a rea image at the same distance from the sphere?

There is a sphere of radius R and refractive index mu . At what distance from the surface of sphere should an object be placed so that real image is formed at the same distance from the sphere ?

Focal length of an equiconvex lens is 20 cm. The refractive index of material of the lens is 1.5. Now one of the curved surface is silvered. At what distance from the lens an object is to be placed, so that image coincides with the object ?

A transparent sphere of radius R and refractive index n is kept in air. At what distance from the surface of the sphere should a point object be placed on the principal axis so as to from a real image at the same distance from the second surface of the sphere.

The figure ,shows a transparent sphere of radius R and refractive index mu .An object O is placed at a distance x from the pole of the first surface so that a real image is formed at the pole of the exactly opposite surface. if an object is Placed at a distance R from the pole of first surface ,then the real image is formed at a distance R from thepole of the second surface.The refractive index mu of the spher is given by

The figure ,shows a transparent sphere of radius R and refractive index mu .An object O is placed at a distance x from the pole of the first surface so that a real image is formed at the pole of the exactly opposite surface. if an object is Placed at a distance R from the pole of first surface ,then the real image is formed at a distance R from thepole of the second surface.The refractive index mu of the spher is given by

The figure ,shows a transparent sphere of radius R and refractive index mu .An object O is placed at a distance x from the pole of the first surface so that a real image is formed at the pole of the exactly opposite surface. If x=2R ,then the value of mu is

The figure ,shows a transparent sphere of radius R and refractive index mu .An object O is placed at a distance x from the pole of the first surface so that a real image is formed at the pole of the exactly opposite surface. If x=2R ,then the value of mu is

The figure ,shows a transparent sphere of radius R and refractive index mu .An object O is placed at a distance x from the pole of the first surface so that a real image is formed at the pole of the exactly opposite surface. If x=oo ,then the value of mu is