A bar magnet used in vibration magnetometer is heted so as to
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A bar magnet used in a vibration magnetometer is heated, so as to reduce its magnetic moment by 36%. The time period of the magnet (neglecting the changes in the dimension of the magnet) :
increases by 36%
decreases by 36%
increases by 25%
decreases by 25%
increases by 36%
decreases by 36%
increases by 25%
decreases by 25%
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