Question

(i) "The refractive index of diamond is 2.42”. What is the meaning of this statement?

(iii) Name a liquid whose mass density is less than that of water but it is optically denser than water.

Answer 1

(i) "The refractive index of diamond is 2.42.” This means the ratio of sine of angle of incidence to the sine of angle of refraction is equal to 2.42.

(ii) Kerosene has refractive index of 1.44, its mass density is less than that of water but it is optically denser than water (kerosene: 1.44 and water: 1.33).