A spring producers a controlling torque of 16 × 10–6

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A spring producers a controlling torque of 16 × 10^–6 Nm for a deflection of 120°. Suppose its width and length are made two times their original value and the thickness is halved, then value of controlling torque for the same deflection will be

1. 16 × 10^–6 Nm
2. 8 × 10^–6 Nm
3. 32 × 10^–6 Nm
4. 2 × 10^–6 Nm

Correct Option: D

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