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Question

# Assertion :In some situations, friction facilitates the motion and in some situations, it oppose the motion. Reason: Friction force always oppose the relative motion between surface in contact

A
Only Assertion is correct
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B
Only Reason is correct
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C
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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D
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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Solution

## The correct option is A Only Assertion is correctFriction can support or oppose the motion of an object. Friction exist in pair just like Newton's third law of motion. One frictional force of this pair can support the motion of the body on which it acts and the other can oppose on which that acts and vice versa.So the correct answer is 'Only assertion is correct'.

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