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Question
Why does a driver use a convex mirror instead of a plane mirror as a rear view mirror?
Illustrate your answer with the help of a ray diagram.
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Solution
A convex mirror diverges the incident beam and always forms a virtual, small and erect image between its pole and focus. Thus, a driver can see all the traffic approaching from behind. This fact enables the driver to use it as a rear view in vehicles to see all the traffic approaching from behind.
RELATED QUESTIONS
Image formed by a convex ______ is always virtual and smaller in size.
A virtual image larger than the object can be produced by a ______.
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
Draw separate diagram for the formation of virtual image of an object by a concave mirror.
Define the following term:
spherical mirror
Define the term Normal.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
