An object is placed at a distance u cm from a concave mirror of focal length f cm.
Channel: Doubtnut
Date: 2020-01-26

An object is placed at a distance u cm from a concave mirror of focal length f cm. The real image of the object is received on a screen placed at a distance of v cm from the mirror. The values of u are changed and the corresponding values of v are measured. Which one of the graphs shown in the figure represents the variation of `1/v` with `1/u` ?