Using a compass needle low would you distinguish between three bars si – InterviewSolution

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1.	Using a compass needle low would you distinguish between three bars similar in shape and appearance if one is brass, the second is an unmagnetised iron and the third is a permanent magnet ?
Answer» Solution :(i) DEFINITION of magnetic MERIDIAN (ii) USUALLY to determine the magnetic meridian we use a magnetic compass and the magnetic needle inside it is FIXED in a horizontal plane.

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