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Q.

A particle moves with constant speed along a circular path of radius 1m. Time period of revolution of the particle is 2 sec. Then magnitude of average velocity of the particle when it moves from one point to the diametrically opposite point is

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a

π m/s

b

2 m/s

c

2 π m/s

d

2.5 m/s

answer is B.

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Detailed Solution

Displacement  =2r=2×1m=2mTime taken by the particle  =T2=22sec=1sec∴ Magnitude of average velocity  =DisplacementTime=21m/s=2m/s
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A particle moves with constant speed along a circular path of radius 1m. Time period of revolution of the particle is 2 sec. Then magnitude of average velocity of the particle when it moves from one point to the diametrically opposite point is