Question

State Snell's Law.

The image below shows the refraction of light in three transparent rectangular blocks, X, Y and Z, made of different materials when they are placed in air. The angle of incidence is different in each case but the angle of refraction is the same in all three blocks. Compare the speed of light in the three blocks. Justify your answer.

The refractive index of diamond is 2.42 and that of water is 1.33. What is the meaning of these statements in terms of the speed of light? (CBSE 2019)

Case Study — Refractive Index of Different Media. The absolute refractive index of a medium is n = c/v, where c is the speed of light in vacuum (3 × 10⁸ m/s) and v is the speed of light in the medium. The refractive indices of some common media are: water = 1.33, kerosene = 1.44, crown glass = 1.52, dense flint glass = 1.65, diamond = 2.42. Answer the following: (CBSE 2024)