AIPMT 2006 | Magnetism and Matter Question 39 | Physics

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AIPMT 2006

MCQ (Single Correct Answer)

-1

Curie temperature above which

paramagnetic material becomes ferromagnetic material

ferromagnetic material becomes diamagnetic material

ferromagnetic material becomes paramagnetic material

paramagnetic material becomes diamagnetic material

AIPMT 2005

MCQ (Single Correct Answer)

-1

A coil in the shape of an equilateral triangle of side $$l$$ is suspended between the pole pieces of a permanent magnet such that $$\overrightarrow B $$ is in plane of the coil. If due to a current i in the triangle a torque $$\tau $$ acts on it, the side $$l$$ of the triangle is

$${2 \over {\sqrt 3 }}\left( {{\tau \over {Bi}}} \right)$$

$$2{\left( {{\tau \over {\sqrt 3 Bi}}} \right)^{1/2}}$$

$${2 \over {\sqrt 3 }}{\left( {{\tau \over {Bi}}} \right)^{1/2}}$$

$${1 \over {\sqrt 3 }}{\tau \over {Bi}}$$

AIPMT 2005

MCQ (Single Correct Answer)

-1

If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by $$\mu $$_d, $$\mu $$_p and $$\mu $$_f respectively, then

$${\mu _d} = 0$$ and $$\mu $$_p $$ \ne $$ 0

$$\mu $$_d $$ \ne $$ 0 and $$\mu $$_p = 0

$$\mu $$_p = 0 and $$\mu $$_f $$ \ne $$ 0

$$\mu $$_d $$ \ne $$ 0 and $$\mu $$_f $$ \ne $$ 0.

AIPMT 2003

MCQ (Single Correct Answer)

-1

A diamagnetic material in a magnetic field moves

from stronger to the weaker parts of the field

from weaker to the stronger parts of the field

perpendicular to the field

in none of the above directions

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