Which of the following graphs is the magnification of a real image against the distance from the focus of a concave mirrorr ?

How does the magnification (m) of the real image formed by a lens vary with the distance (x) of the object from the focus of a concave mirror ?

A concave mirror is used to focus the image of a flower on a nearby well 120 cm from the flower. If a lateral magnification of 16 is desired, the distance of the flower from the mirror should be

Which of the following graph represents relation between the image position (v) and object position (u) from the concave lens.

An object is placed at the focus of concave lens having focal length /. What is the magnification and distance of the image from the optical centre of the lens ?

In a concave mirror, an object is placed at a distance d_1 from the focus and the real image is formed aat a distance d_2 from the focus. Then the focal length of the mirror is :

In a concave mirrorr experiment, an object is placed at a distance x_(1) from the focus and the image is formed at a distance x_(2) from the focus. The focus length of the mirrorr would be