Question

Who proved experimentally that the speed of light in denser medium is less than in rarer medium?

Answer 1

Answer:

When a ray of light bends away from the normal, it goes from denser to rarer medium. It means that P is a denser medium and Q is a rarer medium. The speed of light in a denser medium is less than in a rarer medium. Hence, the speed of light in Q is more than in P.