Question

if the refractive index of water with respect to air is 1.33 and of that of class with respect to air is 1.5 then
A. Water is optically denser than glass.
B.Air is optically densest of all the three media
C. Airs optical density is between glass and air
D. Glass is optically denser than water​

Answer 1

Answer:

D. Glass is optically denser than water

Answer 2

If the refractive index of water with respect to air is 1.33 and that of glass with respect to air is 1.5, then glass is optically denser than water​.

• Refractive index of a medium is given by the ratio of the velocity of light in vacuum to the velocity of light in the given medium.
• Since the refractive index of glass is 1.5, it means that light travels 1.5 times faster in vacuum than in glass.
• Similarly, light travels 1.33 times faster in vacuum than in water.
• A medium with a higher refractive index than the other is has a higher optical density too.
• Since glass has a refractive index greater than that of water, it is optically denser than water.