Question

A driving mirror on a car is never concave because:
A) The field of view is too small
B) The image would be inverter
C) The image would be virtual and therefore useless for the driver
D) Only a plane mirror form a true image

Answer 1

Hint:
As we know that when we drive a car we must have to use a mirror which gives its whole in a small area of the mirror. But in case of concave it gives the inverted image for the distant object.

Complete step-by-step answer:
A concave mirror always gives a real and inverted image for the distant object which is not suitable for the vehicle.
So instead of a concave mirror we are supposed to use the convex mirror because it always forms the smaller image. It always helps the driver to see the whole view. It is also known as a rear view mirror.
So we can’t use the concave mirror because it does not give the whole field of view.
So the correct answer is (A) The field of view is too small.

Note:
Convex mirror is also known as the rear view mirror.
Concave mirror is used by the dentist.
Concave mirrors have negative focal length.
Convex mirrors have negative focal length.