(i) “The refractive index of kerosene is 1.44.” What is meant by this statement? (ii) A ray of light strikes a glass slab of an angle of incidence equal to 30°. Find the refractive index of glass such that the angle of refraction is 19.5°. (Take sin 19.5° = 13 and sin 30° = 12 )
Refractive index of any medium with respect to another indicated the extent to which binding of light takes place when it enters from the first medium to the given medium. The given value of refractive index also states that speed of light in kerosene is 11.44 times the speed of light in a vacuum. (ii) Given, i = 30°, r = 19.5°
