A magnet freely suspended in a vibration magnetometer makes 10 oscillations per minute at a place A and 20 oscillations per minute at a place B. If the horizontal component of earth's magnetic field at A is `36xx10^(-6)T`, then its value at B is
A
`36xx10^(-6)T`
B
`72xx10^(-6)T`
C
`144xx10^(-6)T`
D
`288xx10^(-6)T`
Text Solution
Verified by Experts
The correct Answer is:
C
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