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Four persons use the same stop watch of least count of 100ms to measure the time period of the pendulum,then which of the following is true 1.first says time period is 3.75s 2.second says time period is 2.1s 3.third says time period is 3.70s

Four persons use the same stop watch of least count of 100ms to measure the time period of the pendulum,then which of the following is true
1.first says time period is 3.75s
2.second says time period is 2.1s
3.third says time period is 3.70s

Grade:12

1 Answers

Ashish Kumar
askIITians Faculty 32 Points
7 years ago
The least count is 0.1 s, so time can only be measured accurately upto 1 decimal place. The second person is saying the true time upto 1 decimal place.The others are giving the false time as the time cannot be given upto 2 or more decimal places accurately.

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