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The horizontal component of the earth's ...

The horizontal component of the earth's magnetic field at any place is

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The correct Answer is:
D
Vertical component of earth's magnetic field.
`B_(V) = B_(H)tandelta`
`=(0.36 xx 10^(-4) xx tan60^(@)`
`=0.36 xx 10^(-4) xx sqrt(3) = 0.622 xx 10^(-4)` T
`=0.622 xx 10^(-4)Wb//m^(2)`
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