Science STD 6 CH 11 light shadow and reflection solution

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 light shadow and reflection



according to this chapter students can know about source of light  and can know about reflection
sun, torch , tube light, bulb are source of light...........
reflection depends on objects, volume of objects, intensity of light etc,..........
they can know about transparent objects opaque objects and translucent objects,.............
















 when a beam of light from a point object passes through objective of an optical instruments the lens acts like a circular aperture and produces a diffraction pattern instead of sharp point image..........
 if there are two point objects kept close to each other their diffraction pattern overlap then it may be difficult to distinguish them as a separate...............





























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