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 

Content: 

Angle of dip: The angle made by the earth's magnetic field B with the horizontal direction in the magnetic meridian is called the Angle of Dip. 

Solution: 

→While moving from the equator to the pole the angle dip changes from 0 to 90. The angle of dip is zero when the magnetic equator crosses the geometrical equator.

→The geometric equator lying in the magnetic north will give a negative angle of dip while the geometric equator lying in the magnetic south will give a positive angle of dip. 

→The angle of dip will be maximum in the North and minimum in the south.

The correct answers are options  (2), (3), and (4).