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Magnetism and Matter Test - 43
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Magnetism and Matter Test - 43

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  • Question 1/10
    4 / -1
    Assertion The properties of paramagnetic and ferromagnetic substances are not affected by heating.
    Reason As temperature rises, the alignment of molecular magnets gradually decreases.
  • Question 2/10
    4 / -1
    Assertion Soft iron is used as transformer core.
    Reason Soft iron has narrow hysteresis loop.
  • Question 3/10
    4 / -1
    Assertion Magnetism is relativistic.
    Reason When we move along with the charge so that there is no motion relative to us, we find no magnetic field associated with the charge.
  • Question 4/10
    4 / -1
    Assertion The earth\'s magnetic field does not affect the working of a moving coil galvanometer.
    Reason Earth\'s magnetic field is very weak.
  • Question 5/10
    4 / -1
    Assertion Diamagnetic materials can exhibit magnetism.
    Reason Diamagnetic materials have permanent magnetic dipole moment.
  • Question 6/10
    4 / -1
    Assertion For making permanent magnets, steel is preferred over soft iron.
    Reason As retentivity of stell is smaller.
  • Question 7/10
    4 / -1
    Assertion Gauss\'s theorem is not applicable in magnetism.
    Reason Mono magnetic pole does not exist
  • Question 8/10
    4 / -1
    Assertion When a magnet is brought near iron nails, only translatory force acts on it.
    Reason The field due to a magnet is generally uniform.
  • Question 9/10
    4 / -1
    Assertion When a magnetic dipole is placed in a non uniform magnetic field, only a torque acts on the dipole.
    Reason Force would also act on dipole if magnetic field were uniform.
  • Question 10/10
    4 / -1
    Assertion Reduction factor (K) of a tangent galvanometer helps in reducing deflection due to current.
    Reason Reduction factor increases with increase of current.
    Solutions

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