A) \[45{}^\circ \]
B) \[90{}^\circ \]
C) \[60{}^\circ \]
D) \[30{}^\circ \]
Correct Answer: B
Solution :
When bigger pendulum of time period\[\frac{5T}{4}\]completes one vibration, the smaller pendulum will complete\[\left( \frac{5}{4} \right)\]vibrations. It means the smaller pendulum will be leaded the bigger pendulum by phase\[\frac{T}{4}\sec =\frac{\pi }{2}rad={{90}^{o}}\].
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