Question 18The speed of light in air is 3 x 108ms-1 If the refractive index of light from air to water is 4/3, calculate the speed of light in water.A.2.25 x 108ms-2B.2.25 x 108ms-1C.4.00 x 108ms-1D.4.33 x 108ms-1 Objective Show full explanation