Assertion (A) : The earth's magnetic field is due to iron present in its core. Reason(R) : At low temperature, magnet loses its magnetic property or magnetism.
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Both A and R are correct and R is a correct explanation of A Both A and R are correct and R is NOT a correct explanation of A A is true but R is false R is true but A is false |
Both A and R are correct and R is NOT a correct explanation of A |
The temperature inside the earth is so high that it is impossible for the iron core to behave as a magnet and act as a source of magnetic field. The magnetic field of earth is considered to be due to circulating electric current in molten iron and other conducting materials inside the earth. |