One student is doing experiment to draw the path of light rays passing through a glass. For this, he measured the angle of refraction and angle of emergence for every angle of incidence. In all the cases he found that

In the experiment to trace the path of a ray of light through a parallel sided glass slab, a student measured the angles of refraction for three different angles of incidence. He will find that :

Draw the path of light ray passing through a prism. Label angle of incidence and angle of deviation in the ray diagram.

A ray of light travels from air to glass. It is found that the angle of refraction is half the angle of incidence. The the angle of incidence is given by

A ray of light travels from air to glass. It is found that the angle of refraction is half the angle of incidence. The the angle of incidence is given by

A student does the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He can get a correct measure of the angle of incidence and the angle of emergence by following the labelling indicated in figure :

In an experiment to trace the path of a ray of light passing through a rectangular glass slab, four students measured the angles of incidence (i), angles of refraction (r) and angles of emergence (e) as shown in the diagrams : The correct measurement is given in the diagram :

Refraction of light passing through a glass slab. what is the relation between angle of incidence and angle of emergent? and which rays are parallel ?

A ray of light passes through an equilateral prism such that angle of incidence is equal to the angle of emergence. If the angle of incidence is 45^@ , what is the angle of deviation ?

A student performs the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He measures the angle of incidence anglei , angle of refraction angler and angle of emergence angle e for all his observations. He would find that in all cases :