A ray of monochromatic light travelling in air falls on the surface of a flint-glass block at an angle of incidence of 45∘. The speed of light in flint glass is 1.82×108ms−1.
(i) Calculate the angle made by the ray inside the glass.
(ii) Determine the ratio of the speed of light in air to that in flint glass.
(iii) The wavelength of the light in air is 600nm. Find its wavelength inside the glass.