Questions
Two short magnets having magnetic moments in the ratio 27:8, when placed on opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is 0.12 m from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is
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Correct option is D
M1M2=d1d23⇒278=d10.123⇒32=d10.12⇒d1=0.18 m
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Two short magnets with their axes horizontal and perpendicular to the magnetic meridian are placed with their centres 40cm east and 50cm west of magnetic meridian. If the needle remains undeflected, the ratio of their magnetic moments is
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