Absolute refractive index of water, glass, diamond and sulphuric acid are 1.33, 1.52, 2.4 and 1.41 respectively. In which of the mediums light travels the slowest?
(1) The speed of light in a transparent medium is 2.4 × 108 m/s. Calculate absolute refractive index of the medium.
(2) The speed of light in water and glass is 2.2 × 108 m/s and 2 × 108 m/s, respectively. What is the refractive index of −
(a) water w.r.t. glass
(b) glass w.r.t. water.
(3) Refractive index of water is 4/3 and speed of light in air is 3×108 m/s. Find speed of light in water.