Question

(b) A convex lens of focal length 0-10. m is placed in front of a concave mirror
coaxial with each other. The lens is 0-40 m from the apex of the mirror. When an
object is placed on the axis at a distance of 0.15 m from the lens on the other side,
the image is found to coincide with the object. Find the focal length of the mirror​

Answer 1

Answer:

A point object is placed at a distance of 12cm on the axis of a convex lens of focal length 10 cm.

On the other side of lens, a convex mirror is placed At a distance of 10cm from the lens such that the image formed by the combination coincides with the object itself.

Focal length of convex mirror is

12+10+10=32

Explanation:

is the right ans