Question
State the type of mirror preferred as
(i) Rear view mirror in vehicles, (ii) shaving mirror.
Justify your answer giving two reasons in each case.
Solution
i) Convex mirrors are used as rear-view mirrors in vehicles because they form a virtual, erect, and diminished image of the objects placed in front of them. Moreover, they give a wider field of view enabling the driver to see the traffic behind them.
ii) Concave mirrors are used for shaving as it gives a magnified and erect image of the face.
