Question

(a) The refractive index of Ruby is 1.71. What is meant by this statement?
(b) The refractive index of some medium are given below:
Crown glass - 1.52
Water - 1.33
Sapphire - 1.77
In which of the medium is the speed of light
(i) maximum
(ii) minimum (c) Calculate speed of light in sapphire.

Answer 1

refractive index of Ruby show that by what angle the light is reflected from one medium to another medium
2.(1)water(2)sapphire(3)1.6×10^8m/s

Answer 2

Answer:

(a) This means that the ratio of speed of light in ruby to that of speed if light in vaccum is 1.71.

(b)(I) water

(II) sapphire

(III) 1.6X10^8 m/s

Explanation: