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A sensitive magnetic instrument can be s...

A sensitive magnetic instrument can be shielded very effectively from outside magnetic fields by placing it inside a box of

A

wood

B

plastic

C

metal of high conductivity

D

soft iron of high permeability

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The correct Answer is:
D
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  9. A line joining places of equal declinaiton is called

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  11. The value of angle of dip is zero at the magnetic equator because on i...

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  12. Earth's magnetic field always has a horizontal component except at

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