A concave mirror an erect image of an object placed at a distance of 10 cm from it. The size of the image is double that of the object. Where is the image formed ?

An object is kept at a distance of 16 cm from a thin lens and the image formed is real. If the object is kept at a distance of 6 cm from the same lens, the image formed is virtual. If the size of the image formed are equal, the focal length of the lens will be

A convex lens of focal length 30 cm , a concave lens of focal length 120 cm , and a plane mirror are arranged as shown . For an object kept at a distance of 60 cm from the convex lens, the final image, formed by the combination , is a real image , at a distance of : |"Focal length" | = |"Focal length"| = 30 cm " " =120 cm

The human eye forms the image of an object at its ...

As shown in the figure, a thin rod AB of length 10 cm is placed on the principal axis of a concave mirror such that it.s end B is at a distance of 40 cm from the mirror. If the focal length of the mirror is 20 cm, find the length of the image of the rod

A real image obtained by a concave mirror is 4 times bigger than the object. If the object is displaced by 3 cm away from the mirror, the image size becomes 3 times the object size. Find the focal length of the mirror.

Draw the diagram of image formation by a concave mirror when the object is placed between centre of curvature and focus of the concave mirror. Also state the position, size and nature of the image formed .

Draw the diagram of image formation by a concave mirror when the object is placed between centre of curvature and focus of the concave mirror. Also state the position, size and nature of the image formed.

The distance of an object from a spherical mirror is equal to the focal length of the mirror. Then the image:

In the human eye, the image of an object is formed at the ........