The path of a ray light coming from air passing through a rectangular glass slab traced by four students are shown as A, B, C and D in Figure. Which one of them is correct ?

In an experiment to trace the path of a ray of light passing through a rectangular glass slab, four students tabulated their observations as given below. Which student is correct.

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 :

In an experiment, the path of a ray of light passing through a rectangular glass slab was traced by a student. Which of the following diagram shows correct measurement of angle of incidence (i), refraction (r ), and emergence (e ) ?

In an experiment, the path of a ray of light passing through a rectangular glass slab was traced by a student. Which of the following diagram shows correct measurement of angle of incidence (i), refraction (r ), and emergence (e ) ?

A student while doing the experiment on tracing the path of a ray of light passing through a rectangular glass slab measured the three angles marked as theta_(1), theta_(2) " and " theta_(3) in the figure. His measurements could be correct if he were to find :

Amol performed an experiment on tracing the path of a ray of light passing through a rectangular glass slab. When ray of light enters from air to glass slab, he observed angle I =45^(@) . The angle of refraction must be

Amol performed an experiment on tracing the path of a ray of light passing through a rectangular glass slab. When ray of light enters from air to glass slab, he observed angle I =45^(@) . The angle of refraction must be