Which is more readily seen at a distance, a white blotting paper or a polished mirror? Why?
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Which is more readily seen at a distance, a white bottling paper or a polished mirror? Why?
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A white blotting paper is more readily visible from a distance than a polished mirror because the surface of white blotting paper provides irregular reflection and hence light spreads in all possible directions and one can see the paper from a distance. 

A polished mirror gives rise to only regular reflection and can be seen only in the direction of the reflected rays. Hence, it can't be seen from a distance easily.

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