Question

Material Medium	Refractive Index
A	1.50
B	1.46
C	1.31
D	1.77

Arrange these material mediums given in the table in increasing order of speed of light through them.

Answer 1

The speed of light in a medium is given by:

V = `c/n`

So, a higher refractive index (n) has a lower speed, and a lower n has a higher speed.

D < A < B < C