Identify the correct statement 

  • A

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

  • B

    A simple pendulum with a bob 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 increases, the maximum velocity of the bob for the  same amplitude, during its oscillation also increases

  • 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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  • [KVPY 2012]

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