As the temperature is increased, the period of a pendulum

Options

A. increases as its effective length increases even through its centre of mass still remains at the cenre of the bob
B. decreases as its effevtive length increases even though its centre of mass still remains at the centre of the bob
C. increases as its effective length increases due to shifting to centre of mass bellow the centre of the bob
D. decreases as its effective length remain same but the centre of mass shifts above the centre of the bob

Answer

A

Explanation

`(DeltaT)/(T) = (1)/(2)alphaDeltatheta`