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Question

A bullet loses (1n)th of its velocity passing through one plank. The number of such planks that are required to stop the bullet can be :
  1. 2n2n1
  2. n22n1
  3. Infinite
  4. n

A
2n2n1
B
Infinite
C
n22n1
D
n
Solution
Verified by Toppr

Let the bullet be traveling at a speed v before entering the first plank.

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