Question

A 1cm high object is placed at a distance of 2f from a convex lens. What is the height of the image formed

Answer 1

Answer:

1 cm

Explanation:

At a distance of 2f means at the centre of curvature, as 2f = radius of curvature.

We know, if object is placed at centre, then its image forms at the same point with same size, but inverted.

Height of object = 1 cm

Therefore, Height of Image = 1 cm