A student carries out the experiment of tracing the path of a ray of light through a rectangular glass slab, for two different values of angle if incidence /_i=30^(@) and /_i=45^(@). Find the set of values of the angle of refraction (/_r) and the angle of emergence (/_e)she is likely to observe in the two cases.

A student carries out the experiment of tracing the path of a ray of l

1.	A student carries out the experiment of tracing the path of a ray of light through a rectangular glass slab, for two different values of angle if incidence /_i=30^(@) and /_i=45^(@). Find the set of values of the angle of refraction (/_r) and the angle of emergence (/_e)she is likely to observe in the two cases.
Answer» SOLUTION :The angle of refraction must be less the angle of INCIDENCE. ALSO angle of emergence is equal to angle of incidence. (i) `{:("When",/_i=30^(@),,/_r=20^(@),"and ",/_e=30^(@)):} (II) `{:("When",/_i=45^(@),,/_r=5^(@),"and ",/_e=45^(@)):}