of light rays meeting at a point is called cowoba en beam.
1. Beam of
transcluent
2.
3.
eam.
objects allow some amount of light to pass through it.
In periscope, two plane mirrors are fixed
to each other.
with the increase in the distance between the
source of light and the object.
and
are the natural sources of light.
is a form of energy that gives the sensation of vision.
5.
6.
B. Fill in the blanks.
4. The size of shadow
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