Question

18. a State Snell's law of refraction of light.
b)The refractive index of a medium 'a' with respect to medium 'b' is 2/3 and the
refractive index of medium 'b' with respect to medium 'c'is 4/3. Find the refractive
index of medium 'o' with respect to medium 'a'.​

Answer 1

$\huge\bold\purple{ANSWER}$

Snell's law, in optics, a relationship between the path taken by a ray of light in crossing the boundary or surface of separation between two contacting substances and the refractive index of each. This law was discovered in 1621 by the Dutch astronomer and mathematician Willebrord Snell (also called Snellius).