Question

while tracing the path of a ray of light passing through a rectangular glass a student tabulated his observations as given below.

The correct observation is?
a. I
b.II
c.III
d.IV
and why?
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Answer 1

Answer:

d) bevause other people will already give the answer

Answer 2

Angle of refraction is smaller than angle of incidence and angle of emergence as the light ray bends towards the normal when it enters the glass slab
There is a negligible difference between angle of emergence and angle of incidence because of human and experimental errors but they are actually equal in measures.