Question

an object placed at a distance of 30 cm from a concave lens of focal length 15cm .list four characteristics of the image formed by the lens

Answer 1

we have object distance and focal length = 30cm and -15cm respectively

when we use mirror formula we get v as -10 cm

by using the magnification formula we get 0.3 which is positive so the image is virtual and erect image

v is negative so the image is formed on the same side of the lens

:))))