A. Give reason.
1) Shadow is obtained behind the opaque object.
2) We do not see shadow of a needle on the wall.
3) The eraser gets smaller and smaller as you use it more and more.
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Explanation:
1 shadow is formed where there is no light thats why you see a shadow form there
2 needle is a really short object to stop light from reaching a light on the surface
3 idk this ask someone else
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