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प्रश्न
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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उत्तर
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.
संबंधित प्रश्न
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
At which point of the spherical mirror the carbon paper is placed?
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
Name the kind of mirror used to obtain:
A virtual and diminished image
The focal length of a concave mirror is 10 cm. Find its radius of curvature.
Define the following term:
convex mirror
What do you understand by the term real image?
Draw a ray diagram to show that a convex mirror has a wider field of view.
