Single Choice Type Question Two pendulums of length \( 121 \mathrm{~cm} \) and \( 100 \mathrm{~c...

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Single Choice Type Question
Two pendulums of length \( 121 \mathrm{~cm} \) and \( 100 \mathrm{~cm} \) start vibrating in phase. At some instant, the two are at their means position in the same phase. The minimum number of virbrations of the shorter pendulum after which the two are again in phase at the means position is:
(1) 8
(2) 11
(3) 9
(4) 10
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