Classify the objects or materials given below as opaque. transparent ortranslucent and luminous or non-luminous:water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, asheet of polythene, a.CD, smoke, a sheet of plane glass, fog, a piece of red hottron, 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 ofcellophane, a wire mesh, kerosene stove, sun, firefly, moon.Can you think of creating a shape that would give a circular shadow if held inone way and a rectangular shadow if held in anotherway?In a completely dark room, if you hold up a mirror in front of you, will you see areflection of yourself in the mirror?

Classify the objects or materials given below as opaque. transparent o

1.	Classify the objects or materials given below as opaque. transparent ortranslucent and luminous or non-luminous:water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, asheet of polythene, a.CD, smoke, a sheet of plane glass, fog, a piece of red hottron, 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 ofcellophane, a wire mesh, kerosene stove, sun, firefly, moon.Can you think of creating a shape that would give a circular shadow if held inone way and a rectangular shadow if held in anotherway?In a completely dark room, if you hold up a mirror in front of you, will you see areflection of yourself in the mirror?
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