Question

The magnification of a sperical lens is +0.5 what is the nature of lens and image

Answer 1

Answer:

Concave lens and the formed image is virtual and erect

The image formed by a concave lens is always virtual , errect and smaller than the object therefore the magnification is always positive and less than 1

m = v/ u

0.5 = - v/ -u

1/2 = v/u

u= 2v

this shows that the object distance is twice of image distance