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A MAGNET OF LENGTH 20 CM IS PLACED ON THE ARM OF A DEFLECTION MAGNETOMETE
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A MAGNET OF LENGTH 20 CM IS PLACED ON THE ARM OF A DEFLECTION MAGNETOMETER WHICH IS PLACED IN tan A POSITION THE DISTANCE OF THE NEEDLE FROM THE CENTRE OF THE MAGNET IS 20 CM. CALCULATE THE MAGNETIC MOMENT IF DEFLECTION IS 60* ???(Bh=0.4 x 10^-4) .











