# The type of graph between length of a simple pendulum and time period is

$(a)\;\text{elliptical } \\(b)\;\text{hyperbola } \\(c)\;\text{parabola } \\(d)\;\text{Circular}$

$T = 2 \pi \sqrt{\frac{L}{g}}$
$L \propto T^2$
The graph between length and time period of a simple pendulum is hyperbola.
Hence b is the correct answer.
edited Mar 7