Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic.
Reason: Both ferromagnetic and ferromagnetic are strongly attracted by the magnetic field.

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

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

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If assertion is true but reason is false.

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If assertion Is false but reason is true.

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Solution

The correct option is C If assertion is true but reason is false.
On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic because the electrons change their spin.

Ferrimagnetic substances are weakly attracted by the magnetic field.

Hence, the statement given in the reason is false.

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Similar questions

Which of the following statements are correct ?

(a) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic

(b) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic

(c) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other

(d) In ferromagnetic substances, all the domains get oriented in the direction of magnetic filed and remain as such even after removing magnetic field

Q. Assertion :Iron, cobalt, nickel and

C r O_{2}

are called ferromagnetic substances. Reason: Ferromagnetic substances are weakly attracted by magnetic field.

Q. What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic?

Q. Assertion :The ferromagnetic substance do not obey Curie's law Reason: At Curie point a ferromagnetic substance start behaving as a paramagnetic substance

Q. Assertion :The ferromagnetic substance do not obey Curie's law. Reason: At Curie point a ferromagnetic substance start behaving as a paramagnetic substance.

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Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic. Reason: Both ferromagnetic and ferromagnetic are strongly attracted by the magnetic field.

Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic.
Reason: Both ferromagnetic and ferromagnetic are strongly attracted by the magnetic field.