An illuminated object is placed at a distance of 20 cm from a converging lens of focal length 15 cm. The image obtained on the screen is:

A luminous object is placed at a distance of 40 cm from a converging lens of focal length 25 cm. The image obtained in the screen is

An object is placed at a distance of 30 cm from a concave lens of focal length 15 cm . Find the nature and position of the image.

An index pin of height 3 cm is kept at a distance of 15 cm from a convex lens of focal length 10 cm. The image is obtained on a screen placed on the other side of the lens. What is the height and nature of the image ?

An object is placed at a distance of 50 cm from a concave lens of focal length 20 cm. Find the nature and position of the image.

5 cm high object is placed at a distance of 25 cm from a converging lens of focal length 10 cm. Determine the position ,size and type or the image.

An object is placed at a distance of 50cm from a concave lens of focal length 20cm. Find the nature and position of the image.