In big showrooms and departmental stores, the vigilance mirror used is a

(A) plane mirror

(B) convex mirror

(C) concave mirror

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(D) combination of a concave mirror and convex mirror

(E) None of the above/More than one of above

Answer: (B)

Solution: In big showrooms and departmental stores, the vigilance mirror used is a convex mirror.

dome mirror vertical
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