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JEE Main 11 April 2015 Paper

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Question : 21

Total: 90

A short bar magnet is placed in the magnetic meridian of the earth with north pole pointing north. Neutral points are found at a distance of 30 cm from the magnet on the East - West line, drawn through the middle point of the magnet.The magnetic moment of the magnet in Am2 is close to
(Given

=10−7) in SI units and BH= Horizontal component of earth's magnetic field =3.6×10−5Tesla)

9.7
4.9
19.4
14.6

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