Question

an object is placed at 60 cm from a concave lens of focal length 30 cm,find the image distance?​

Answer 1

Answer:

image distance is -60cm

Explanation:

as object is places at the centre of curvature , hence the distance of object from the mirror is equal to the distance of the image from the mirror

Answer 2

Answer:

image would be form at 20cm from the lens