Light is incident on a heavy glass slab of refractive index 1.6.The speed of light in the glass is

Question

Quizplus · Accepted Answer

The speed of light in a medium is given by: 
v = c/n, where c is the speed of light in vacuum (3.0 x 10^8 m/s) and n is the refractive index of the medium. 
Therefore, for the given glass slab of refractive index 1.6, the speed of light will be: 
v = c/n = (3.0 x 10^8 m/s)/1.6 = 1.88 x 10^8 m/s 
Thus, the correct choice is C.

Light Is Incident on a Heavy Glass Slab of Refractive