Question

The distance between pole and focal point of a spherical mirror is equal to the distance between
a)pole and center of curvature
b)focus point and center of curvature c)pole and object
d)object and image​

Answer 1

Answer:

focus point and center of curvature

Answer 2

Option (b) focus point and center of curvature is the correct option.

Solution: The distance pole and focal point of the mirror is called the focal length of the lens. The distance between them is half the radius of the curvature of the spherical mirror.

Now, radius of curvature is the length between the pole and center of curvature.

One important relationship is:

Radius of curvature= 2 * Focal length

This means that focus point is the midpoint of center of curvature and pole.

Therefore, the distance between pole and focus point and distance between focus point and center of curvature is equal.