Question

2. Refractive index of glass relative to water is 9/8. What is the refractive index of water relative
to glass?
(Ans: 8/9)​

Answer 1

Answer:

The refractive index of water relative to glass is inverse of the refractive index of glass relative to water. so the answer is 8/9

Answer 2

Answer:

8/9

Explanation:

we know if n gw = 9/8 then n wg =1/ n gw

so n wg = 1/ 9/8 = 8/9