Question

a ray of light is incident on the interface separating water and glass the absolute refractive index of water and glass are 1.33 and 1.5 . If the speed of light in water is 2.25x10^8 m/s , find the speed of light in a) vacuum b) glass

Answer 1

Some typical refractive indices for yellow light (wavelength equal to 589 nanometres [10−9 metre]) are the following: air, 1.0003; water, 1.333; crown glass, 1.517; dense flint glass, 1.655; and diamond, 2.417.