NEET 2013 | Magnetism and Matter Question 24 | Physics

NEET 2013

MCQ (Single Correct Answer)

-1

A bar magnet of length $$'l'$$ and magnetic dipole moment 'M' is bent in the form of an arc as shown in figure. The new magnetic dipole moment will be

NEET 2013 Physics - Magnetism and Matter Question 40 English

NEET 2013 Physics - Magnetism and Matter Question 40 English

$${2 \over \pi }M$$

$${M \over 2}$$

$${3 \over \pi }M$$

NEET 2013

MCQ (Single Correct Answer)

-1

A current loop in a magnetic field

can be in equilibrium in two orientations, both the equilibrium states are unstable.

can be in equilibrium in two orientations, one stable while the other is unstable.

experiences a torque whether the field is uniform or non uniform in all orientations.

can be in equilibrium in one orientation.

AIPMT 2012 Mains

MCQ (Single Correct Answer)

-1

A magnetic needle suspended parallel to a magnetic field requires $$\sqrt 3 J$$ of work to turn it through 60^o. The torque needed to maintain the needle in this position will be

$$2\sqrt 3 J$$

$$3$$ $$J$$

$$\sqrt 3 \,J$$

$${3 \over 2}\,J$$

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It

will become rigif showing no movement

will stay in any position

will stay in north-south direction only

will stay in east-west direction only

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