Question

a ray of light travelling in air enters water normally what are the values of angle of incident and angle of refraction

Answer 1

Answer:

When light enters the boundary of two surfaces at right it passes normally without deviation. This is because here angle of incidence at the boundary of two mediums is zero. sin i sin r = μ ∵ i = 0 = > sin i = 0 sin r = sin i μ = > sin r = 0 = > r = 0 We see angle of refraction also becomes 0 .