Question

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

Answer 1

Answer:

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.