Which of following statements are correct?
A) Electric monopoles do not exist whereas magnetic monopoles exist
B) Magnetic field lines due to a finite solenoid and a bar magnet are different as bar magnet is a dipole
C) Angle of dip is zero at the equator of earth
D) $χ = - 1$ is the condition for a perfectly diamagnetic substance, where $χ$ is its magnetic susceptibility

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C and D only

B and D only

A and B only

B and C only

answer is A.

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Detailed Solution

Electric monopoles or a single charge can exist whereas magnetic poles exist in pair.

Magnetic field lines due to a finite solenoid and a bar magnet are same.

At magnetic equator, vertical component of earth's magnetic field become zero.

For diamagnetic substances: $χ = - 1$

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