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Time for 20 oscillations of a pendulum i...

Time for 20 oscillations of a pendulum is measured as `t_(1)=39.6" "s," "t_(2)=39.9" "s and t_(3)=39.5 s.` What is the precision in the measurements?
What is the accuracy of the measurement?

A

0.1 sec

B

0.01 sec

C

1 sec

D

2 sec

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The correct Answer is:
A
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