1.

At a place on earth the horizontal component of earth's magnetic field is 73.2 % times then its vertical component. The angle of dip at this place is .....

Answer»

`30^@`
`45^@`
`60^@`
`90^@`

SOLUTION :`TAN phi = (B_v)/( B_h)`
`THEREFORE tan phi = (B_v)/(1.732 B_v)""[because B_h = 1.732B_V]`
`= (1)/(1.732) = (1)/(SQRT3) therefore tan phi = 30^@`.


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