Question

Out of the two media - Medium 1 and Medium 2, in which is the speed of light more?

Hint:

When light moves from a denser medium to a rarer one, it speeds up and bends away from the normal.

Answer 1

The bending of light as it passes from one medium to another occurs due to a change in its speed. The ray bends away from the normal when it moves from a denser medium to a rarer one. Since the ray bends away from the normal as it passes from Medium 1 (incident medium) to Medium 2 (refracted medium), this indicates that the speed of light in Medium 1 is greater than the speed of light in Medium 2. This is because light speeds up when moving into a less dense medium, bending away from the normal. Thus, the speed of light is more in Medium 1.