what. equipment or material needed to show a formation of light
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Three things are required for formation of shadow, viz. a source of light, an object and a screen. The size of shadow depends on the distance of source of light and on the angle at which the light rays fall on the object.
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Three things are required for formation of shadow, viz. a source of light, an object and a screen. The size of shadow depends on the distance of source of light and on the angle at which the light rays fall on the object.
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