A compass needle, whose magnetic moment is 60 Am2, is directed towards geographical north at any place experiencing force moment of 1.2 × 10' 3 Nm. At that place, the horizontal component of earth's field is 40 mm'2. What is the value of declination at that place?

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A compass needle, whose magnetic moment is 60 Am2, is directed towards geographical north at any place experiencing force moment of 1.2 × 10' 3 Nm. At that place, the horizontal component of earth's field is 40 mm'2. What is the value of declination at that place?