1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A conducting circular loop is placed in a uniform magnetic field 0.04 T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2 mm/s. The induced emf in the loop when the radius is 2 cm is
A
4.8$$\pi $$$$\mu $$V
B
0.8$$\pi $$$$\mu $$V
C
1.6$$\pi $$$$\mu $$V
D
3.2$$\pi $$$$\mu $$V
2
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
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Three capacitors each of capacitance C and of breakdown voltage V are joined in series. The capacitance and breakdown voltages of the combination will be
A
$$3C,{V \over 3}$$
B
$${C \over 3},3V$$
C
$$3C,3V$$
D
$${C \over 3},{V \over 3}$$
4
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Under the influence of a uniform magnetic field, a charged particle moves with constant speed v in a circle of radius R. The time period of rotation of the particle
A
depends on R and not on v
B
is independent of both v and R
C
depends on both v and R
D
depends on v and not on R