The torque of 50 Nm is applied on the wheel operating a valve. If the wheel is rotated through two revolutions, work done in Newton-metres is given by

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Q. The torque of 50 Nm is applied on the wheel operating a valve. If the wheel is rotated through two revolutions, work done in Newton-metres is given by

(A) 628
(B) 107 dynes
(C) 314
(D) 25

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✅ Correct Answer: (A) 628

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