Question

Assertion : Refractive index of diamond is greater than that of glass.
Reason • The speed of light is greater in diamond than in glass.​

Answer 1

Answer:

here is your answer

assertion is true but reason is false

Explanation:

The higher the index of refraction is, the slower the speed of light is. The indexes of refraction for diamond, air and glass are, respectively, 2.42, 1.00, and approximately 1.50, depending upon the composition of the glass. Light travels slowest in diamond

The refractive index of diamond(2.42) is much greater than that of glass(1.5). The large refractive index results in small critical angle for diamond i.e. about 240.