NCERT Exemplar VII — task. Science CBSE, Class 7.

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Figure shows an oscillating pendulum.

Simple pendulum

Time taken by the bob to move from $A$ to $C$ is $t_1$ and from $C$ to $O$ is $t_2$ . The time period of this simple pendulum is

$3$ $t_1$ $+$ $t_2$
$4$ $t_1$ $+$ $t_2$
$2$ $t_1$ $+$ $t_2$
$t_1$ $+$ $t_2$

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