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![The least count of a stop watch is 0.5s . The time of 40 oscillations of the pendulum is found to be 40s . The percentage error in the time period is: The least count of a stop watch is 0.5s . The time of 40 oscillations of the pendulum is found to be 40s . The percentage error in the time period is:](https://dwes9vv9u0550.cloudfront.net/images/6395617/26bbdb5e-dc2d-474f-9df9-431bd9fe598e.jpg)
The least count of a stop watch is 0.5s . The time of 40 oscillations of the pendulum is found to be 40s . The percentage error in the time period is:
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