Question

1 Give answers for the followings-
(i) Name the type of mirror used in the headlights of a car.
(ii) List any two characteristics of the images formed by convex mirrors.
(iii) Find the focal length of a convex mirror whose radius of curvature is 32cm.
(iv) What is meant by power of a lens? What does its sign (+ve or –ve) indicate?
(v) Name the type of mirrors used in the design of solar furnances.

Answer 1

1)convex mirror 3) f=1/r=1/32
4) p=1/f
2) virtual,real , image form behind the mirror
5) concave mirror