In case of a curved mirror if the distance of object` "(u)" `and image `"(v)"` are measured from the pole and a graph is plotted between `"(1/u)` and` "(1/v)"` ,the graph is

For sperical mirros graph plotted between - (1)/(V) and -(1)/(u)is .

In Arrehenius equation if a graph is plotted between logK and 1/T, the slope of the curve will be:

The graph between the image distance (v ) and object distance (u) from the convex lens is

For a concave mirrorr, if real image is formed the graph between (1)/(u) and (1)/(v) is of the form

Statement I : Focal length of a spherical mirror depends on the distances of object and image from the mirror. Statement II : (1)/(f ) = (1)/(v ) + (1)/(u)

The shape of graph between 1//u and 1//v in case of a convex lens is Fig.

The graph between (1)/(v) and (1)/(u) for a concave mirror looks like.

In an experiment to measure the focal length of a convex lens , the data for image distances (v) for difference object distance (u) are plotted to obtain the three graphs of (1) v against u , (2) (1)/(v) against (1)/(u) and (3) u + v against u . It possible to find the focal length directly , without any further calculations , from which of these graphs ?