An object is placed `15 cm` in front of a convex lens of focal length `10 cm`. Find the nature and position of image formed. Where should a concave mirror of radius of curvature `20 cm` be position of the object itself ?

An object is placed 15 cm in front of a convex lens of focal length 10 cm . Find the nature and position of image formed. Where should a concave mirror of radius of curvature 20 cm be placed so that the final image is formed on the position of the object itself ?

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 50cm from a concave lens of focal length 20cm. Find the nature and position 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 15 cm from a concave mirror of focal length 10 cm. Find the position, nature and size of the image.

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