Given that T stands for time period and `l` stands for the length of simple pendulum. If g is the acceleration due to gravity, then which of the following statements about the relation `T^2= l'/'g` is correct?
Options:
(a) It is correct both dimensionally as well as numerically.
(b) It is neither dimensionally correct nor numerically.
(c) It is dimensionally correct but not numerically.
(d) It is numerically correct but not dimensionally.