Magnetic meridian is :

1.  a point

2.  a line along north-south

3.  a horizontal plane

4.  a vertical plane

A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It 

1.  will stay in north-south direction only 

2.  will stay in east-west direction only 

3.  will become rigid showing no movement 

4.  will stay in any position

A dip circle is taken to geomagnetic equator. The needle is allowed to move in a vertical plane perpendicular to the magnetic meridian. The needle will stay 

1.  in horizontal direction only 

2.  in vertical direction only 

3.  in any direction except vertical and horizontal 

4.  in any direction it is released