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8th Class Science Sound

  • question_answer 5)
    A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.

    Answer:

    Number of oscillations = 40 Time taken to complete 40 oscillations = 4 sec   Time taken to complete one oscillation =4/10= 0.1 sec   So time period = 0.1 sec   Frequency = 1/Time period= 1/0.1=10Hz  


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