Point A (0, 1 cm) and B (12 cm, 5 cm) are the coordinates of object and image x-axis is the principal axis of the mirror. The, this object image pair is

An object of length 2.5 cm is placed at the principal axis of a concave mirror at a distance 1.5 f. The image height is

A concave mirror forms a real image, on a screen of thrice the linear dimension of a real object placed on its principal axis. The mirror is moved by 10 cm along its principal axis and once again a sharp image of the object is obtained on the screen. This time the image is twice as large as the object. Find the focal length of the mirror.

For a given optical system, the principal axis is x-axis and coordinates of object are (-30,+1,0) and coordinates of image are (+20,-2,0) All coordinates are in cm. If the optical system is a concave mirror, it is located at what point?

The image image of an object placed at a distance of 30 cm on the principal axis of a concave mirror from its pole is formed on the object itself. Find (a) the focal length and (b) linear magnification of mirror: