Question

A concave mirror has focal length 15cm at what distance should the object be placed form the mitron so that it forms an image ,21cm from the mirror ,,? also find the magnification produced by the mirror

please solve the question​

Answer 1

Answer:

The real and inverted image created by a concave mirror becomes of equal size to the object when both object and images are situated on the centre of curvature.

This means that the object distance is equal to the radius of curvature for the mirror.

Radius of curvature =2× focal length of the mirror.

Given, focal length of the mirror =15cm

So, object distance = radius of curvature =2×15cm=30cm