1
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
A short bar magnet of magnetic moment 0.4 J T$$-$$1 is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equilibrium when the potential energy is
A
0.064 J
B
$$-$$ 0.064 J
C
zero
D
$$-$$ 0.082 J
2
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
In the circuit shown in the figure, if the potential at point A is taken to be zero, the potential at point B is

AIPMT 2011 Mains Physics - Current Electricity Question 87 English
A
+1 V
B
$$-$$1 V
C
+2 V
D
$$-$$2 V
3
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
Three charges, each +q, are placed at the corners of an isosceles triangle ABC of sides BC and AC, 2$$a$$. D and E are the mid points of BC and CA. The work done in taking a charge Q from D to E is

AIPMT 2011 Mains Physics - Electrostatics Question 54 English
A
$${{3qQ} \over {4\pi {\varepsilon _0}a}}$$
B
$${{3qQ} \over {8\pi {\varepsilon _0}a}}$$
C
$${{qQ} \over {4\pi {\varepsilon _0}a}}$$
D
zero
4
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite directions when their displacement is half of the amplitude. The mean positions of the two particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is
A
$${\pi \over 6}$$
B
0
C
$${{2\pi } \over 3}$$
D
$$\pi $$