Given that T stands for time period and l stands for length of simple pendulum. If g is the acceleration due to gravity, then which of the following statements about T² = 4π l/g correct ?

It is dimensionally correct but not numerically

Time period of a simple pendulum : T = \(2 \pi \sqrt{\frac{l}{g}}\)

T² = \(4 \pi^2 \frac{l}{g}\)

So, the given relation is correct dimensionally but NOT numerically.