In an experiment, the period of oscillation of a simple pendulum was observed to be \( 2.63 \mat...

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In an experiment, the period of oscillation of a simple pendulum was observed to be \( 2.63 \mathrm{~s}, 2.56 \mathrm{~s} \),
\( \mathrm{P} \) \( 2.42 \mathrm{~s}, 2.71 \mathrm{~s} \) and \( 2.80 \mathrm{~s} \). The mean absolute error is

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(a) \( 0.11 \mathrm{~s} \)
(b) \( 0.12 \mathrm{~s} \)
(c) \( 0.13 \mathrm{~s} \)
(d) \( 0.14 \mathrm{~s} \)
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