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A bullet of mass 0.02 kg travelling horizontally with velocity 250 `ms^(-1)`strikes a block of wood of mass 0.23 kg which rests on a rough horizontal surface. After the impact, the block and bullet move together and come to rest after travelling a distance of 40 m. The coefficient of sliding friction of the rough surface is `(g = 9.8 ms^(2))`

A

0.75

B

0.61

C

0.51

D

`0.30`

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The correct Answer is:
C
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