Refractive index of the glass slab is `1.5.` There is a point object `O` inside the slab as shown. To eye`E_1` object appears at a distance of `6cm` (From the top surface) and to eye `E_2` it appears at a distance of `8cm` (from the bottom surface). Find thickness of teh glass slab.

A bubble in glass slab (mu = 1.5) when viewed from one side appears at 5 cm and 2 cm from other side, then thickness of slab is :

An image is formed at a distance of 100 cm from the glass surface with refractive index 1.5, when a point object is placed in the air at a distance of 100 cm from the glass surface. The radius of curvature is of the surface is

A point object is placed at the center of a glass sphere of radius 6cm and refractive index 1.5. The distance of virtual image from the surface is

A point object is placed at the centre of a glass sphere of radius 6cm and refractive index 1.5. The distance of virtual image from the surface is

An object is at a distance of d=2.5 cm from the surface of a glass sphere with a radius R=10 cm. Find the position of the final image produced by the sphere. The refractive index of glass is mu_1.5.

There is a spherical glass shell of refractive index 1.5, inner radius 10 cm and outer radius 20 cm. Inside th espherical cavity, there is air. A point object is placed at a point O at a distance of 30cm from the outer spherical surface. Find the final position of th eimage as seen eye.

A ray of light is incident normally on a glass slab of thickness 5 cm and refractive index 1.6. The time taken to travel by a ray from source to surface of slab is same as to travel through glass slab. The distance of source from the surface is

A slab of water is on the top of a glass slab of refractive index 2. At what angle to the normal must a ray be incident on the top sureface of th eglass slab so that it is reflected from the bottom surface as shown in figure ?

A postal stamp is placed on a surface and a glass cube of refractive index 3/2 is placed over it. When observed through the glass slab, the stamp appears at a height of 1 .5 cm from the bottom. Another glass cube made of different material nad having the same thickness is placed over the first glass cube. When observed from the top, the stamp now appears to be at a height of 4 cm from the bottom. Determine the refractive index of the second galss cube.