Question

A. Fill in the blanks.
d
1.
A ray of light, passing from one medium to another, does not bend its path if
its angle of incidence equals
degree.
2.
is the speed
The more is the optical density of a given medium, the
of light through it.
3.
The phenomenon of the splitting of white light into seven colours is known as
the phenomenon of
The point, on the principal axis of a concave lens, from where a beam of incident
parallel ray appears to diverge, is called the
of the
lens.​

Answer 1

Answer:

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Explanation: