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A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60°.

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A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60°. The torque needed to maintain the needle in this position will be

(a) √3W 

(b) W

(c) (√3/2)W 

(d) 2W.

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1 Answer

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Best answer

Correct Option(a) √3W 

Explanation:

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