| Directions: In the following questions, a statement of Assertion [A] is followed by a statement of Reason (R). Mark the correct choice as: |
| Assertion [A]: The Earth's magnetic field is due to iron present in its core. |
| Reason (R): At a low temperature magnet losses its magnetic property or magnetism. |
A) Both Assertion [A] and Reason (R) are true and Reason (R) is the correct explanation of Assertion [A]
B) Both Assertion [A] and Reason (R) are true but Reason (R) is not the correct explanation of Assertion [A]
C) Assertion [A] is true but Reason (R) is false
D) Assertion [A] is false and Reason (R) is also false
Correct Answer: D
Solution :
(d) The temperature inside, the Earth is so high that it is impossible for 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 the iron (in molten state) and other conducting materials inside the Earth.
You need to login to perform this action.
You will be redirected in
3 sec
