Question

The image of an object formed by a lens is of magnification - 1. If the distance between the object and
its image is 60 m, what is the focal length of the lens? If the object is moved 20 cm towards the lens,
where would the image be formed ? State reason and also draw a ray diagram in support of your
answer.​

Answer 1

Answer:

Explanation:

The answer is given in the attachment please follow it