1
AIPMT 2010 Mains
MCQ (Single Correct Answer)
+4
-1
The magnetic moment of a diamagnetic action is
A
much greater than one
B
1
C
between zero and one
D
equal to zero
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Electromagnets are made of soft iron because soft iron has
A
low retentivity and high coercive force
B
high retentivity and high coercive force
C
low retentivity and low coercive force
D
high retentivity and low coercive force
3
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
A vibration magnetometer placed in magnetic meridian has a small bar magnet. The magnet executes oscillations with a time period of 2 sec in earth's horizontal magnetic field of 24 microtesla. When a horizontal field of 18 microtesla is produced opposite to the earth's field by placing a current carrying wire, the new time period of magnet will be
A
1 s
B
2 s
C
3 s
D
4 s
4
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
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