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Assertion: Diamagnetism is universal, it...

Assertion: Diamagnetism is universal, it is present in all materials
Reason: Field due to induced magnetic moment is opposite to the magnetising field.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true and reason is not the correct explanation of assertion.

C

If assertion is ture but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Diamagnetism is when a material acquires amagnetisation in the opposite direction to the applied magnetic field. As a magnetic field will always induce magnetism, diamagnetism will occur in all substances. The magnitude may be small and be overcome by other para or ferromagnetic properties.
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Knowledge Check

  • A: Diamagnetism is almost indipendent of temperature. R: The induced dipole moment in a diamagnetic sample is always opposite to the magnetising field irrespective of what the internal motion of the atom is .

    A
    If both Assertion & Reason are the true and the reason is the correct explanation of the assertion, then mark (1)
    B
    If both Assertion & Reason are true but the reson is not the correct explanation of the assertion, then mark (2)
    C
    If Assertion is true statement but Reason is false, then mark (3)
    D
    If both Assertion and Reason are false statements, then mark (4)

  • Assertion: Diamagnetic materials can exhibit magnetism. Reason: Diamagnetic materials have permanent magnetic dipole moment.

    A
    If both the assertion and reason are true and reason is a true explanation of the assertion.
    B
    If both the assertion and reason are true but the reason is not the correct explanation of assertion.
    C
    If the assertion is true is true but reason is false.
    D
    If both the assertion and reason are false.

  • Assertion (A) : Diamagnetic substances are attracted by magnetic fields. Reason : Ferromagnetic substances are strongly attracted by magnetic field.

    A
    Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
    B
    Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
    C
    Assertion (A) is correct, but Reason (R) is incorrect statement.
    D
    Assertion (A) is incorrect, but Reason (R) is correct statement.

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