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Identify the correct statement 
  • A
    The greater the mass of a simple pendulum bob, the shorter is its frequency of oscillation
  • BA 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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