The method of levelling in which the heights of mountains are found by observing the temperature at which water boils is known as

The angle of intersection of a curve is the angle between

The length of a ranging rod should be

A reverse curve consists of

During levelling if back sight is more than foresight

The position of point can be fixed more accurately by

The least count of prismatic compass is

Reading of the metric levelling staff can be taken accurately up to

Which among the following doesn't indicate the basic calculation of total station?