The optical path of a monochromatic ligth is the same,if it goes through 2.0 cm of glass or 2.25 cm of water.If the refractive index of water is `4//3`,what is the refractive index of glass?

The refractive index of water is 1.33.What will be the speed of light in water?

If refractive index of glass w.r.t. air is 1.55, then what is the refractive index of air w.r.t. glass.

A glass slab of thickness 4 cm contains the same number of waves as 5 cm of water,when both are traversed by the same monochromatic light.If the refractive index of water is 4//3 ,what is the refractive index of glass?

The refractive index of air w.r.t glass is 2//3 .The refractive index of diamond w.r.t. air is 12//5 .What is the refrative index of glass w.r.t. diamond?

A convex lens has 20 cm focal length in air.What is its focal length in water? (Refractive index of air-water is 1.33 , refractive index for air¬glass = 1.5).

A glass of refractive index 1.45 disappears when immersed in a liquid. What is the value of refractive index of the light?