NEET 2013 | Magnetism and Matter Question 24 | Physics

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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NEET Subjects

Biology

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution