Question

refractive index of glass relative to water is 9/8. what is the refractive index of water relative to glass?

Answer 1

Thanks for asking the question.
Refractive index of a material is defined as the ratio of speed of light in vacuum to the speed of light in that material. 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.
Hope it helps.

Answer 2

Answer:

Refractive index of a material is defined as the ratio of speed of light in vacuum to the speed of light in that material. 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.

hope it will help you dear☺☺☺☺.....