If a ray of light takes `t_(1)` and `t_(2)` times in two media of absolute refractive indices `mu_(1)` and `mu_(2)` respectively to travel same distance, then

Speed of light through two media of refractive indices mu_(1) and mu_(2) are u_(1) and u_(2) respectively, then

If the figure below, PQRS denotes the path followed by a ray of light as it travels three media in succession. The absoulte refractive indices of the media are mu_(1),mu_(2) and mu_(3) respectively (The line segment RS' in the figure is parallel to PQ ) Then : .

If the figure below, PQRS denotes the path followed by a ray of light as it travels three media in succession. The absoulte refractive indices of the media are mu_(1),mu_(2) and mu_(3) respectively (The line segment RS' in the figure is parallel to PQ ) Then : .

The length of the optical path of two media in contact of length d_(1) and d_(2) of refractive indices mu_(1) and mu_(2) respectively, is

The length of the optical path of two media in contact of length d_(1) and d_(2) of refreactive indices mu_(1) and mu_(2) respectively, is

A ray of light passes through a plane boundary separating two media whose refractive indics are mu_(1) = 3//2 and mu_(2) = 4//3 . (i) If the ray travels from medium 1 to medium 2 at an angle of incidence of 30^(@) , what is the angle of refraction ? (ii) If the ray travels form medium 2 to medium 1 at the same angle of incidence, what is the angle of refraction ?