Speed of light in water is 2.25 × 108 ms. Calculate the refractive index of water.
Refractive index is given by
n = cv
= 2.25× 1082.25× 108
= 1.33
Solve:
(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.