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Assertion: To protect any instrument fro...

Assertion: To protect any instrument from external magnetic field, it is put inside an iron body.
Reason: Iron is a magnetic substance.

A

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

B

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

C

If the assertion is true is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Since iron is ferromagnetic in nature, therefore, lines of force due to external magnetic field prefer to pass thrrough iron.
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A2Z-MAGNETISM AND MATTER-Section D - Chapter End Test
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  4. If the magnetic flux is expressed in weber, then magnetiv induction ca...

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  6. A small rod of bismuth is suspended freely between the poles of a stro...

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  7. Magnetic moment of two bar magnets may be compared with the help of

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  8. At place, the magnitudes of the horizontal component and total intensi...

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  9. The angle of dip at a certain place is 30^(@). If the horizontal compo...

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  10. The horizontal component of the earth's magnetic field is 0.22 Gauss a...

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  11. Earth's magnetic field always has a horizontal component expert at or ...

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  12. The magnet of a vibration magnetometer is heated so as to reduce its m...

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  13. A magnet is suspended in such a way that it oscillates in the horizont...

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  14. The plane of dip circle is set in the geographic meridian and the appa...

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  15. At 45^(@) to the magnetic meridian the apparent dip is 60^(@). The tru...

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  16. Two short magnets of magnetic moment 2 Am^(2) and 5 Am^(2) are placed ...

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