Q.

The path of the light can be changed by ________

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a

A black body

b

A polished surface

c

Passing it through vacuum

d

A black surface

answer is A.

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Detailed Solution

A polished surface changes the path of the light rays by reflecting it this reflection is called regular reflection. Where as black body and black surface absorbs the light and vaccum passes light through it with out changing its path

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