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A bullet losses 1/n of its velocity in p...

A bullet losses 1/n of its velocity in passing through a plank. What is the least number of plancks required to stop the bullet ? (Assuming constant retardation)

A

`(n ^(2))/(2n-1)`

B

`(2n^(2))/(n -1)`

C

Inifinite

D

n

Text Solution

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The correct Answer is:
B
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