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    Physics
    Grade-9
    Easy

    Question

    A pendulum takes 50 seconds to complete 25 oscillations. Calculate its time period.

    1. 0.5 sec
    2. 2 sec
    3. 20 sec
    4. 1250 sec

    Hint:

    Frequency is defined as the number of complete oscillations in unit time.

    The correct answer is: 2 sec

      Frequency is defined as the number of complete oscillations in unit time.
      The relation between frequency and time period is f equals 1 over T

      f r e q u e n c y equals fraction numerator N u m b e r space o f space o s c i l l a t i o n over denominator t i m e end fraction f equals 25 over 50 equals 1 half s o space t equals space 2 space s e c

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