Question

In an experiment to trace the path of a ray of light passing through a rectangular glass slab
Angle of incidence in air was given a 60 degree .two students P and Q found angle of reflection is 42 degree and 65 degree respectively who is right and why

Answer 1

Student P ha made the right observation because as light is entering from a rarer medium to a denser medium..The speed will decrease....So light will bend towards the median and will make an angle less than the angle of incidence.....This is why angle of refraction should be less than 60°