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.

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

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 20 cm from a convex mirror of focal length 10 cm. The image formed by a mirror is

An object is placed at a distance of 30 cm from a concave mirror of focal length 15 cm. The image will be