Question

speed of light in water is 2.25*10^8 m/s and the speed of light in glass is 2.0*10^8m/s calculate refractive index​

Answer 1

Refractive index of Water with respect to glass=1.125

or

Refractive Index of glass with respect to water=0.89

Explanation:

Refractive index of Water with respect to glass

n=speed of light in water /speed of light in glass

n=2.25*10^8/2.0*10^8

n=2.25/2

n=1.125

or

Refractive Index of glass with respect to water

n=speed of light in glass/speed of light in water

n=2.0*10^8/2.25*10^8

n=1/1.125

n=0.89