Let the magnetic field on earth be modelled by that of a point magnetic dipole at the centre of earth. The angle of dip at a point on the geographical equator is
A
always zero
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B
positive, negative or zero
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C
unbounded
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D
always negative
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Solution
The correct option is C positive, negative or zero The angle of dip at a point on the geographical equator is positive, negative or zero depending upon the situation.