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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
Define the following term in the context of spherical mirrors:- Principal focus
What type of image is formed:
on a cinema screen?
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
Write the formula for a lens connecting image distance (v), object distance (u) and the focal length (f). How does the lens formula differ from the mirror formula?
Define the following term in relation to concave mirror.
Pole
What is the relation between focal length and radius of curvature of a concave mirror?
An object 10 cm high is placed at a distance of 20 cm in front of a spherical mirror of focal length 25 cm. By scale drawing find the nature, position, and magnification of the image in the following case:
Concave mirror
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
