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Question:

Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.

Solution:

(1) Convex mirror is used as rear view mirrors
Reasons : (a) It forms an erect image of an object, hence objects become easily identified
(b) It forms a diminished image of object-thus increases the field of vision
(2) Concave mirror are used as shaving mirrors
Reason : When the face is held with in the focus of a concave mirror, then an enlarged image of the face is seen in the concave mirror. This helps in making a smooth shave.