CBSE Class 10 Science 2017 · Paper 31/1/2/C · Question 2
Why is convex mirror used as a rear view mirror in vehicles ? State any one reason.
Answer
A convex mirror gives a much wider field of view, so the driver sees a large area of traffic behind.
A convex mirror curves outwards, so it has a much wider field of view than a plane mirror of the same size: the driver can see a large area of the traffic behind the vehicle. (Equally acceptable as the one reason: a convex mirror always forms an erect, though diminished, image of the vehicles behind.)
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