Identify correct statement among the following

  • A

    The greater the mass of a pendulum bob, the shorter is its frequency of oscillation

  • B

    A simple pendulum with a bob of mass M swings with an angular amplitude of ${40^o}$. When its angular amplitude is ${20^o}$, the tension in the string is less than $Mg\cos {20^o}$.

  • C

    As the length of a simple pendulum is increased, the maximum velocity of its bob during its oscillation will also decreases

  • D

    The fractional change in the time period of a pendulum on changing the temperature is independent of the length of the pendulum

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