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If the period of pendulum oses 13.5 s/da...

If the period of pendulum oses 13.5 s/day at 1 km above the surface of earth, then the period of pendulum 1 km below the surface of the earth loses will be

A

7 s

B

13.5 s

C

14 s

D

27 s

Text Solution

Verified by Experts

The correct Answer is:
A
Pendulum loses time perday at a depth 1 km below the surface of earth is,
`=(13.5d)/(2)=(13.5xx1)/(2)~~7s`.
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