| ASSERTION: To protect any instrument from external magnetic field, it is put inside an iron body. |
| REASON: Iron is a magnetic if brought near iron nails, only translatory force act on it. |
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 true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: A
Solution :
Since iron is ferromagnetic in nature, therefore, lines of force due to external magnitude field prefer to pass through iron.
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