Question

The time period T of a simple pendulum is related to its length l as

• A. $T\propto l$
• B. $T\propto l^2$
• C. $T^2\propto \sqrt{l}$
• D. $T^2\propto l$

Answer 1

The correct option is D

$T^2\propto l$

The time period T of a simple pendulum is directly proportional to the square root of length l of the pendulum i.e., $T\propto \sqrt{l}$ or $T^2\propto l$.