1.

At a place of the Earth, horizontal component of magnetic field is equal to vertical component then dip angle (phi)= …........ .

Answer»

(A) `60^@`
(B) `90^@`
(C)`45^@`
(D) `30^@`

Solution :Here `B_(H) = B_(v)` tan `tan phi = (B_v)/( B_h)`
`THEREFORE tan phi = 1`
`therefore phi= tan^(-1) (1)`
`therefore = 45^@`


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