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23. A bullet of mass 0.1 kg is fired with a speed of 100 m/sec, the mass of gun is 50 kg. The velocity of recoil is

(a)  0.2 m/sec                          (b)  0.1 m/sec

(c)   0.5 m/sec                          (d)  0.05 m/sec

Ans. a

(11)

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