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Ferromagnetism

Assertion A :...

Question

Assertion (A) : To protect any instrument from external magnetic field, it is put inside an iron box
Reason (R) : Iron is a ferromagnetic substance

A

Both A and R are true and R is the correct explanation of A

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B

Both A and R are true and R is not correct explanation of A

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C

A is true, but R is false

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D

A is false, but R is true

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Solution

The correct option is C Both A and R are true and R is the correct explanation of A
To protect any instrument from external magnetic field it is put inside an iron box as iron is a ferromagnetic substance it will not get magnetize by the magnetic field due which there will not be any effect of magnetic field on the instrument.

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