An object is placed 20 cm from

(a) A converging lens, and

(b) A diverging lens, of focal length 15 cm. Calculate the image position and magnification in each case.

Calculate the image distance for an object of height 12 mm at a distance of 0.20 m from a concave lens of focal length 0.30 m?

A concave lens has a focal length of 20 cm. At what distance from the lens a 5 cm tall object is placed so that it forms an image at 10 cm from the lens? Also calculate the size of the image formed.

A 2.0 cm tall object is placed 40 cm from a diverging lens of focal length 15 cm. Find the position and size of the image.

Find the position and size of the virtual image formed when an object 2 cm tall is placed 20 cm from:

(i) a diverging lens of focal length 40 cm.

(ii) A converging lens of focal length 40 cm.