Magnetic Meridian is a
  • point
  • horizontal plane
  • line along N-S
  • vertical plane
Match the column
magnetism-and-matter-mcq-1.png
  • p -> i, q ->ii, r -> i, s -> ii
  • p -> ii, q ->ii, r -> ii, s -> i
  • p -> i, q ->ii, r -> ii, s -> i
  • p -> ii, q ->i, r -> ii, s -> i
The magnetic susceptibility of an ideal diamagnetic substance is
  • - 1
  • 0
  • 1
  • $\infty$
The Magnetic Resonance Imaging (MRI) is based on the phenomenon of
  • nuclear magnetic resonance
  • electron spin resonance
  • electron paramagnetic resonance
  • diamagnetism of human tissues.
Match the column
magnetism-and-matter-mcq-2.png
  • p ->iii, q -> iv, r -> i, s -> iii
  • p ->iv, q -> ii, r -> i, s -> iii
  • p ->iv, q -> i, r -> iii, s -> ii
  • p ->iv, q -> i, r -> ii, s -> iii
When orientation of dipoles parallel and antiparallel to magnetic field is distributed unequally, then the material is
  • paramagnetic
  • antiferromagnetic
  • ferromagnetic
  • ferrimagnetic
Lines of force due to earth horizontal magnetic field are
  • curved lines
  • parallel and straight
  • elliptical
  • concentric circles
Curie temperature of iron is the temperature below which, it is
  • ferromagnetic
  • radioactive
  • superconducting
  • diamagnetic
There are four light weight rod samples A,B,C and D separately by threads. A bar magnetic is slowly brought near each sample and following observation are noted (i) A is feebly repelled (ii) B is feebly attracted (iii)C is strongly attracted (iv) D remains unaffected Which one of the following is true
  • A is a of non-magnetic material
  • C is a diamagnetic material
  • D is of Ferromagnetic material
  • B is of a paramagnetic material
In a permanent magnet at room temperature
  • magnetic moment of each molecule is zero.
  • domains are all perfectly aligned
  • domains are partially aligned.
  • the individual molecules have non-zero magnetic moment which are all perfectly aligned
(a) If both assertion and reason are true and reason is the correct explanation of the assertion. (b) If both assertion and reason are true but reason is not correct explanation of the assertion. (c) If assertion is true, but reason is false. (d) If both assertion and reason are false. (e) If reason is true but assertion is false. Assertion: Diamagnetic materials can exhibit magnetism. Reason: Diamagnetic materials have permanent magnetic dipole moment
  • (a)
  • (b)
  • (c)
  • (d)
  • (e)
(a) If both assertion and reason are true and reason is the correct explanation of the assertion. (b) If both assertion and reason are true but reason is not correct explanation of the assertion. (c) If assertion is true, but reason is false. (d) If both assertion and reason are false. (e) If reason is true but assertion is false. Assertion: The true geographic north direction is found by using a compass needle Reason: The magnetic meridian of the earth is along the axis of rotation of the earth
  • (a)
  • (b)
  • (c)
  • (d)
  • (e)
(a) If both assertion and reason are true and reason is the correct explanation of the assertion. (b) If both assertion and reason are true but reason is not correct explanation of the assertion. (c) If assertion is true, but reason is false. (d) If both assertion and reason are false. (e) If reason is true but assertion is false. Assertion: Magnetic susceptibility is a pure number. Reason: The value of magnetic susceptibility for vacuum is one.
  • (a)
  • (b)
  • (c)
  • (d)
  • (e)
(a) If both assertion and reason are true and reason is the correct explanation of the assertion. (b) If both assertion and reason are true but reason is not correct explanation of the assertion. (c) If assertion is true, but reason is false. (d) If both assertion and reason are false. (e) If reason is true but assertion is false. Assertion: When a magnet is brought near iron nails, only translatory force acts on it Reason: The field due to magnetic is generally uniform
  • (a)
  • (b)
  • (c)
  • (d)
  • (e)
(a) If both assertion and reason are true and reason is the correct explanation of the assertion. (b) If both assertion and reason are true but reason is not correct explanation of the assertion. (c) If assertion is true, but reason is false. (d) If both assertion and reason are false. (e) If reason is true but assertion is false. Assertion: In the absence of an externally applied electric field, the displacement per unit volume of a polar dielectric material is always zero. Reason: In polar dielectrics, each molecule has a permanent dipole moment but these are randomly oriented in the absence of an externally applied electric field.
  • (a)
  • (b)
  • (c)
  • (d)
  • (e)
A short bar magnet of magnetic moment $5.25 \times 10^{-2} \ JT^{-1}$ is placed with its axis perpendicular  to the earth's field direction. Magnitude of the earth's field at the place is given to be .42 G. We can ignore the length of magnet in comparison to the distance involved At what distance from the center of the magnet on its normal bisector is the resultant field inclined at 45° with the earth's field
  • 2 cm
  • 4 cm
  • 5 cm
  • 6 cm
At what distance from the center of the magnet in its axis is the resultant field inclined at 45° with the earth's field
  • 5 cm
  • 6.8 cm
  • 4. 5 cm
  • 6.3 cm
if $\chi $ stands for magnetic susceptibility of a given material , the class of material for which is $ -1 \leq  \chi  <0$
  • diamagnetic
  • paramagnetic
  • ferromagnetic
  • non magnetic material
if $ 0 < \chi < \varepsilon$ where $\varepsilon$ stands for small positive integer, the class of material will be
  • diamagnetic
  • paramagnetic
  • ferromagnetic
  • non-magnetic
Match the column
magnetism-and-matter-mcq-3.png
  • p ->ii, q -> iii, r -> i
  • p ->ii, q -> i, r -> iii
  • p ->iii, q -> ii, r -> i
  • p ->i, q -> iii, r -> ii
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0