A square card of side length 1 mm is being seen through a magnifying lens of focal length 10 cm. The card is placed at a distance of 9 cm from the lens. The appaent area of the card thorugh the lens is

A figure divided into squares, each of size 1.0 mm^2 is being viewed at a distance of 9.0 cm through a magnifying lens of focal length 10 cm held close to the eye. (ii) The area of each square in the virtual image is

A figure divided into squares, each of size 1.0 mm^2 is being viewed at a distance of 9.0 cm through a magnifying lens of focal length 10 cm held close to the eye. (i) The magnification produced by the lens will be

A figure divided into squares, each of size 1.0 mm^2 is being viewed at a distance of 9.0 cm through a magnifying lens of focal length 10 cm held close to the eye. (iii) The angular magnification of the lens is equal to

A lens with a focal length of 25 cm produces real image of an object at a distance of 50 cm from the lens. At what distance the object placed from the lens?

A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens ?

An object is placed at a distance of 15 cm from a convex lens.If the focal length of the lens is 60cm,find the image distance.

A card sheet divided into squares each of size 1 mm^2 is being viewed at a distance of 9 cm through a magnifying glass (a converging lens focal length 10 cm) held close to the eye. What is the magnification produced by the lens? How much is the area of each square in the virtual image?

The focal length of convex lens is 20 cm. If an object of height 4 cm is placed at a distance of 30 cm from the lens, find: The magnification produced by the lens.