Question

a ray of light travilling in air strikes a glass slab at an angle 30 degree.calculate theangle of refraction if refractive index of glass is 1.5​

Answer 1

Explanation:

According to snells law:

sin i/sin r = n

hence,

given angle of incidence is 30°

therefore sin i= 30°

given refractive index is 1.5

therefore n= 1.5

By snells law,

sin r = 1/2/1.5

= 1/3

so r= 19.472°

hope this helps!!