A 5 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 20 cm. The distance of the object form the lens is 30 cm. Find the (i) positive (ii) nature and (iii) size of the image formed.

An object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. The distance of the object from the lens is 15 cm. Find nature and position of image.

An object 3.0 cm high is placed perpendicular to the principal axis of a concave lens of focal length 7.5cm. The image is formed at a distance of 5 cm from the lens. Calculate (i) distance at which object is placed and (ii) size and nature of image formed.

An object is placed at a distance of 10 cm before a convex lens of focal length 20 cm. find the position and nature of the image?

An object is placed at 5cm from a convex lens of focal length 15cm. What is the position and nature of the image ?

A point object is placed at a distance of 30cm from a convex mirror of focal length 30cm. The image will form at