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A gun fires a bullet of mass 50 gm with a velocity of 30 m sec−1. Because of this the gun is pushed back with a velocity of 1 m sec−1. The mass of the gun is

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a

15 kg

b

30 kg

c

1.5 kg

d

20 kg

answer is C.

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Detailed Solution

mG=mBvBvG 50×10−3×301=1.5 kg

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