As the temperating is increases, the time period of pendulum

Options

A. increases as its effective length increases even though its centre of man (CM) still reaming at the centre of the bob
B. decreases as its effective length increases even though its CM still remains at the centre of the bob
C. increases as its effective length increases due to shifting of CM below the centre of the bob
D. decreases as its effective length remains same but the CM shifts above the centre of the bob.

Explanation

(a) With increase in temperating, the effective length ( `l`) of the simple pendulum increases even though its CM still remains at the centre of bub. So As `T=2pisqrt((1)/(g))or T alphasqrt(l)` so T increases as temperature increase.