A magnetic needle lying parallel to a magnetic field is turned through 60^\circ. The work done on it is W. The torque required to maintain the magnetic needle in the position mentioned above is

AP EAMCET Engineering 2012 Solved Paper

Section: Physics

Question : 7 of 160

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A magnetic needle lying parallel to a magnetic field is turned through 60°. The work done on it is W. The torque required to maintain the magnetic needle in the position mentioned above is

√3W
√3
2
W
W
2
2W

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