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The least count of a stop watch is 0.1s. The time of 20 oscillations of the pendulum is found to be 20s. The percentage error in the time period is

October 1, 2022
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The least count of a stop watch is 0.1s. The time of 20 oscillations

Q. The least count of a stop watch is 0.1s. The time of 20 oscillations of the pendulum is found to be 20s. The percentage error in the time period is

  1. 0.25%
  2. 0.75%
  3. 0.50%
  4. 1.0%

Answer: 0.50%

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