Advertisements
Advertisements
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.
Advertisements
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
A simple microscope is used by watch repairers. Give reason.
One half of a convex lens of focal length 10 cm is covered with a black paper. Can such a lens produce an image of a complete object placed at a distance of 30 cm from the lens? Draw a ray diagram to justify your answer. A 4 cm tall object is placed perpendicular to its principal axis of a convex lens of focal length 20 cm. The distance of the object from the lens is 15 cm. Find the nature, position and the size of the image.
Explain the following term related to spherical lenses:- principal axis
Name the two types of spherical mirrors. What type of mirror is represented by the:
front side of a shining steel spoon?
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror or convex mirror)?
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
How tall does a mirror have to be to fit an entire person’s body?
