refractive index of glass with respect to air is 3/2..refractive index of water with respect to air is 4/3..what is the refractive index of glass with respect to water?? is it 3/2 divided by4/3 or 4/3 divided by 3/2??
let speed in glass be z,water be y and air be x
3/2 = x/z
z = 2x/3
4/3 = x/y
y = 3x/4
RI of glass with respect to water is = 3x/4 * 3/2x = 9/8 = 1.125