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A magnet perf...

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A magnet performs 10 oscillations per minute in a horizontal plane at a place where the angle of dip is 45^0 and the total intensity is 0.707 CGS units.The number of oscillations per minute at a place where dip angle is 60^° and total intensity is 05 CGS units will be(a) 5(c) 9(b) 7(d) 11

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A magnet makes $10$ oscillations per minute at a place where the angle of dip is $45^{0}$ and the total intensity is $0.4$ gauss. The number of oscillations made per sec by the same magnet at another place where the angle of dip is $60^{o}$ and the total intensity is $0.5$ gauss is approximately

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[{cos}^{- 1} (0.74) = {42.2}^{\circ}]

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