In the experiment on simple pendulum, it is found that the time period of oscillation is directly proportional to its effective length. What conclusion do you draw about the shape of the curve obtained from the graph?
The curve on the graph will be a straight line. This implies that the variation of the square of the time period (T2) with length (l) is a straight line inclined to Y-axis. This shows that T2 is directly proportional to length.