Question

If a ray of light propagating in air strikes a glass slab at an angle 9f 60degree,with the surface of a dlab the angle of refraction is

Answer 1

The answer is 40°

Refractive index of glass is 1.5

And angle of incidence is 60°

So angle of refraction will be 60/1.5

Which is 40°

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Answer 2

if array of light propagating in air strikes a glass slab at an angle of 60° with the surface of the slab the angle of refraction is more than 30 degree .