Question

Size of image of an object by a mirror having a focal length of 20cm is observed to be
reduced to one third of its size. At what distance the object has been placed from the mirror
? What is the nature of the image and the mirror?

Answer 1

Answer:

Size of image of an object by a mirror having a focal length of 20cm is observed to be

reduced to one third of its size. At what distance the object has been placed from the mirror

? What is the nature of the image and the mirror?