Question

a. Define Refractive index b. Absolute Refractive indices of four different media a,b,c and d are respectively 1.4 ,1.1,2.1,1.8 arrange them in the increasing order of their optical densities C. Arrange these media in the increasing order of speed of light

Answer 1

Answer:

a. The ratio of the velocity od light in a vaccum to its velocity in a specified medium.

b. 1.1 , 1.4 , 1.8 , 2.1

Since, optical density increases with increase in refractive index.

c. 2.1 , 1.8 , 1.4 , 1.1.

Since, the speed of light decreases with the increase in refractive index.