Physics - SHM Question with Solution | TestHub

Using the formula for time-period of a pendulum

$\mathrm{T}=2\mathrm{\pi }\sqrt{\frac{\mathcal{l}}{\mathrm{g}}}\mathcal{}{\mathrm{}}^{\mathrm{}}$

$\Rightarrow$$l\propto T^2$

This relation suggests graph between length L and Time Period T will be a parabola.