Question

state the laws of refraction of light explain the term absolute refraction Index of a medium and write an expression to relate it with the speed of light in vacuum ​

Answer 1

Answer:

The ratio of sine of angle of incidence and angle of refraction is constant. Absolute refractive index is defined as the ratio of the velocity of light in vaccuum to the velocity of light in medium. Expression to relate speed of light in vacuum= n=c/v. 4.3.

Answer 2

Explanation:

laws of refraction :

1. the incident ray , the refracted ray and the normal to the point of incidence all lie in the same plane

2. ratio of sine of angle of incidence is to ratio of sine of angle of refraction is a constant

sini / sinr = constant

ABSOLUTE REFRACTIVE INDEX :

ratio of speed of light in air is to speed of light in medium is called absolute refractive index