A beam of light converges towards a point O, behind a convex mirror of focal length 20 cm. Find the nature and position of image if the point O is 30 cm behind the mirror.

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image

An object of 3 cm height is placed at a distance of 60 cm from a convex mirror of focal length 30 cm.Find the position and size of the image formed.

An object of size 5 cm is placed at distance 25 cm in front of a concave mirror of focal length 20 cm. Find the size and nature of image formed ? Also find distance of image from the mirror.

An object is at a distance of 5 m from a convex mirror of focal length 10 cm.Where is he image formed ?

An object is placed in front of a convex mirror of focal length 30 cm.If the image formed is a quarter of the size of the object,find the position of the image.

An object of size 5 cm is placed at distance of 25 cm in front of a convex lens of focal length 20 cm. Find the size and nature of image and its distance from the lens.

A convex lens of focal lenth 30 cm and a concave lens of focal length 60 cm are placed in contact.Find the power of the combination.

What is the nature of the mirror having focal length - 15 cm?