As the temperature rises, the time period of a pendulum

Step-by-step solution

The time period of a simple pendulum is given by T = 2 l g As the temperature increases, the length l of the pendulum increases due to linear thermal expansion, given by l' = l(1 + ) Since T l , an increase in the length of the pendulum leads to an increase in its time period. Thus, the time period of the pendulum increases.