Question

Light enters water at an angle of incidence of 24 degrees and refractive index of 4/3.Calculate the angle of refraction

Answer 1

Explanation:

According to Snell's law :

Sin i / Sin r = refractive index

$r = sin^{ - 1} ( \frac{sin \: i}{1.33} ) = sin^{ - 1} (0.3)$

$angle \: of \: refraction = 17.45°$

Therefore, angle of refraction is less than angle of incidence because the light ray bends towards the normal when it travels from rarer to denser medium