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A particle of mass 0.1 kg is subjected to a force which varies with distance as shown in fig. If it starts its journey from rest at x=0, its velocity at x=12m  is

(a)      0 m/s

(b)   20 √2 m/s

(c)  20 √3 m/s

(d) 40 m/s

Answer:d

 

(7)

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