An object is placed at a distance of 15 cm from a convex lens of focal length 20 cm. List four characteristics (nature,position,etc.) of the image formed by the lens.

Explanation

Here, `u = -15 cm, f=20cm`
As object lies between principal focus and optical centre of the lens, therefore, image formed is virtual,erect, larger in size and formed on the same side of lens as the object.