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प्रश्न
Compare the time periods of the two pendulums of lengths 1 m and 9 m.
उत्तर
Let T1 and T2 be the time periods of the two pendulums of lengths 1m and 9m, respectively.
`T_1/T_2 = (2pisqrt(1/"g"))/(2pisqrt(9/"g"))`
or , `T_1/T_2 = sqrt(1/9)`
or , `T_1/T_2 = 1/3`
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