Chapter 29, Problem 30A

To determine

ToRank:The transparent materials as per amount of bending of light

Explanation of Solution

Introduction: 

When the light travels in the vacuum and enters into the new medium like water, air, the speed is decreased in proportion to the refractive index. So, the amount of reduction in speed is a function of the refractive index.

Naturally, when light travels through air and enters into a different medium such as water or glass, the speed and wavelength of the light are reduced but the frequency remains unaltered. 

A light ray bends towards the normal while traversing a material medium if it travels faster in it as compared to the one it enters from.

By observing three figures, concerning the three different materials, their densities, refractive indicesand the given speed, it is concluded that light in C bendsthe most towards the normal, and in A bends the least towards the normal.

Conclusion: 

The rank of the transparent materials as per amount of bending of light is C > B > A.