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A pole is floating in a liquid with 80 cm of its length immersed. It is pushed doun a certain distance and then released. Time period of vertical osci

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A pole is floating in a liquid with 80 cm of its length immersed. It is pushed doun a certain distance and then released. Time period of vertical oscillation is
A. `(4pi)/(7)`s
B. `(3pi)/(7)`s
C. `(2pi)/(7)s`
D. `(pi)/(7)s`
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Correct Answer - A
`T=2pisqrt((l_("immersed"))/(g))`
`rArrT=2pisqrt((0.80)/(9.8))=(4pi)/(7)`
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