In sum and difference method in vibration magnetometer, the time … - Vidyadip

Question

In sum and difference method in vibration magnetometer, the time period is more if(a) Similar poles of both magnets are on same sides(b) Opposite poles of both magnets are on same sides(c) Both magnets are perpendicular to each other(d) Nothing can be said

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Answer

(b) Opposite poles of both magnets are on same sides

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