Assertion :To unscrew a rusted nut, we need a wrench with a longer arm Reason: Wrench with longer arm reduces the torque applied by the arm

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is C Assertion is correct but Reason is incorrect
The torque or moment of force is the product of force and perpendicular distance from the pivot. Thus, longer arm will give more torque for small applying force and more torque will help to open screw easily. Thus, assertion is correct but reason is incorrect.

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