A lens placed at a distance of 20 cm from an object produces a virtual image `2//3` the size of the object.Find the position of image,kind of lens and its focal length.

A lens placed at a distance of 20 cm from an object produces a virtual image 2//3 the size of the object. Find the position of the image, kind of the lens and its focal length.

An object is placed at a distance of f//2 from a convex lens .The image will be

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 5.0 cm of length is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the position of the image,its nature and size.

A convex lens forms a virtual image of an object. What is the position of the object?

Draw a ray diagram to show how the image is formed when the object is placed between f and 2 f distances from a convex lens.Deduce the relation between the distances of he oject and the image from the lens and the focal length of the lens under this condition.

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.