A magnet makes `40` oscillations per minute at a place having magnetic field intensity of `0.1xx10^(-5)T`. At another place, it takes 2.5 sec to complete one vibrating. The value of earth's horizontal field at that place is
A
`0.25xx10^(dot)T`
B
`0.36xx10^(dot)T`
C
`0.66xx10^(dot)T`
D
`1.2xx10^(dot)T`
Text Solution
Verified by Experts
The correct Answer is:
B
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