Question

b)The refractive index of diamond is 2.42. What is the meaning of this statement?
c) A ray of light passes from air to water and in next case from air to diamond in which does the
ray of light bend more?​

Answer 1

The statement 1 means that The ratio of The speed of light in diamond with respect to it's original speed in vacuum is 2.42

In 2, The Ray of light bends more in diamond as it's refractive index is higher.