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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Units and Measurement
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The time taken by a pendulum to complete 20 vibrations is $88.0 $ second. The time period of the pendulum is

$\begin{array}{1 1} 4\;s \\ 4.4\;s \\ 4.40 \;s \\4.400\;s \end{array} $

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Answer :$ 4.40 \;s $
Only three significant figures are required in the result.
answered Aug 12, 2014 by meena.p

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