Consider a magnetic dipole kept in the north-south direction. Let P1,P2, Q1, Q2 be four points at the same distance from the dipole towards north, south, east and west of the dipole respectively. The directions of the magnetic field due to the dipole are the same at
(a) P1and P2
(b) Q1 and Q2
(c) P1 and Q1
(d) P2 and Q2.
