# Magnetism and Matter - Online Test

Q1. which of the following statements about earth's magnetism is correct
Explaination / Solution:
No Explaination.

Q2. Which of the following statements about bar magnets is correct ?
Explaination / Solution:

As magnetic monopole does not exist. If we split the bar magnet into two pieces each part will have its own north and south pole.

Q3. When iron filings are sprinkled on a sheet of glass placed over a short bar magnet then,
Explaination / Solution:

North pole act as positive end and South pole act as negative end. The iron fillings in the presence of magnetic field gets magnetized and form a tiny magnet which then gets attracted to the poles of bar magnet. North pole of bar magnet attracts south pole of tiny magnet and vice-versa. So all the iron fillings are arranged as the magnetic field lines of bar magnet.

Q4. Which of the following statements about magnetic field lines true?
Explaination / Solution:
No Explaination.

Q5. In which case of comparing solenoid and bar magnet there is no exact similarity?
Explaination / Solution:
No Explaination.

Q6. Far axial magnetic field of a solenoid as well as bar magnet vary
Explaination / Solution:
No Explaination.

Q7. Compass needle of known magnetic moment m in a uniform magnetic field field experiences a torque equal to
Explaination / Solution:
No Explaination.

Q8. magnetic potential energy Um of Compass needle of known magnetic moment m in a uniform magnetic field field is
Explaination / Solution:
No Explaination.

Q9.
According to the dipole analogy  corresponds to

Explaination / Solution:
No Explaination.

Q10. According to Gauss’s law for magnetism
Explaination / Solution:
No Explaination.