Question

define snell's law. a ray of light is incident on a glass slab at an angle of 60 degree if the angle of refraction be 32.7 degree. calculate the refractive index of glass

Answer 1

Answer---

☆ SNELL LAW : -

i- ★ The incident ray, the reflected ray and the normal at the point of incident all lie in the same plane .

ii- ★ The ratio of the Sine of angle of incident i to the Sine of angle of refraction R is constant for the pair of given media .

● The refractive index = Sin i / Sin r.

● The refractive index = Sin 60° / Sin 30°

● Refractive index = 0.866 / 0.5

　◎»» 1.73 mew

Answer 2

Answer:

According to the Shell's Low of Refraction of Light : The ratio of sine of angle of incidence to the sine of angle of refraction is constant for a given pair of media.

i. e. -- sine of angle of incidence/ sine of angle of refraction = Constant

or sin i/ sin r = constant