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A particle moves according to the law x ...

A particle moves according to the law `x = acos`(pi)/(2)` The distance covered by it in the time interval between t=0 to t=3s is

A

r

B

2r

C

3r

D

4r

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The correct Answer is:
C
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NTA MOCK TESTS-NTA NEET SET 48-PHYSICS
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