1.

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»

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



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