A lens placed at a distance of `20cm`from a object produces of virtual Image `2//3`the size of the object.Find the position of the 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 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.

A convex lens of focal length f produces a virtual image n times the size of the object. Then the distance of the object from the lens is

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.

An object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.

An object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.

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