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In case of second's pendulum, match the ...

In case of second's pendulum, match the following (consider shape of earth also)

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The correct Answer is:
`(Ararrq,B rarr t, C rarr p, D rarr t)`
On a statellie and at centre of earth g'=0
`therefore T=oo`
At pole , value of g is more than the normal value. Hence, `T lt 2 s`
At mountain, or at some height , value of g is less, Hence `T gt 2 s`
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