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 concave mirror always forms a real image.
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
Name the kind of mirror used to obtain:
A real and diminished image.
An object 5 cm high is placed at a distance 60 cm in front of a concave mirror of focal length 10 cm. Find the position and size of the image.
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Define the following term:
convex mirror
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
