Physics-
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Question

Three balls A, B and C open parentheses m subscript A end subscript equals m subscript C end subscript equals 4 m subscript B end subscript close parentheses are placed on a smooth horizontal surface. Ball B collides with ball C with an initial velocity n as shown in the figure. Total number of collisions between the balls will be : (All collisions are elastic)

  1. one    
  2. two    
  3. three    
  4. four    

The correct answer is: three

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