The graph showing the variation of the square of time period (T2) on Y-axis against the length (l) on the X-axis of a pendulum is a straight line parallel to the (l) axis or the X-axis.
False
The graph showing the variation of the square of time period (T2) on Y-axis against the length (l) on the X-axis of a pendulum is a straight line inclined to the l axis or the X-axis. The graph intersects the origin at (0,0) which means that the line is not parallel to the X axis. Hence, the given statement is not true.