Assertion :When a body tends to slide down an inclined plane, force of friction acts up the plane. Reason: Friction always opposes the relative motion.

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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Both Assertion and Reason are incorrect.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The nature of friction is to resist relative motion between surfaces in contact. So it acts opposite to the direction of motion of body.

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Assertion :When a body tends to slide down an inclined plane, force of friction acts up the plane. Reason: Friction always opposes the relative motion.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.The nature of friction is to resist relative motion between surfaces in contact. So it acts opposite to the direction of motion of body.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The nature of friction is to resist relative motion between surfaces in contact. So it acts opposite to the direction of motion of body.