Electricity
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Semiconductor Electronics
MCQ (Single Correct Answer)
1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
A
repelled by the north pole and attracted by the south pole
B
attracted by the north pole and repelled by the south pole
C
attracted by both the poles
D
repelled by both the poles
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A bar magnet having a magnetic moment of 2 $$ \times $$ 104 J T$$-$$1 is free to rotate in a horizontal plane. A horizontal magnetic field B = 6 $$ \times $$ 10$$-$$4 T exists in the space. The work done in taking the magnet slowly from a direction parallel to the field to a direction 60o from the field is
A
12 J
B
6 J
C
2 J
D
0.6 J
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Curie temperature above which
A
paramagnetic material becomes ferromagnetic material
B
ferromagnetic material becomes diamagnetic material
C
ferromagnetic material becomes paramagnetic material
D
paramagnetic material becomes diamagnetic material
4
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
A charged particle (charge q) is moving in a circle of radius R with uniform speed v. The associated magnetic moment $$\mu $$ is given by
A
$$qv{R^2}$$
B
$$qv{R^2}/2$$
C
qvR
D
qvR/2
NEET Subjects