Question

Classify the objects or materials given below as opaque, transparent or
3. Magic Device in the cha
Air water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a
sheet of polythene, a CD. smole, a sheet of plane glass, fog, a piece of red hot
uses reflections. Now le
iron an umbrella, a lighted fluorescent tube, a wall. a sheet of carbon paper
the flame of a gas burner. a sheet of cardboard, a lighted torch a sheet of
Can you think of creating a shape that would give a circular shadow if held in
In a completely dark room, if you hold up a mirror in front of you, will you see a
symmetry in your Math
translucent and luminous or non-luminous:
textbook, you might have
interesting device Kaleidos
another device, a periscop
reflections to see around
one of your freinds to
cellophane, a wire mesh, kerosene stove, sun, firefly, moon.
corridor just outside th
3
the classroom with am
one way and a rectangular shadow if held in another way?
Ask another friend also h
to stand in the middle
4.
front of the entrance
reflection of yourself in the mirror?
friends to ajust their
way that the image of
SUGGESTED ACTIVITIES
you while you are se
You can make a simu
1. Make a row of your friends - A, B, C and D. standing in a line. Let one friend
shown in Fig 1
to see in the Mirror AB
2.
stand in front facing them and holding out a mirror towards them (Fig. 11.10).​

Answer 1

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