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Question

An L-shaped glass tube is just immersed in flowing water such that its opening is pointing against flowing water. If the speed of water current is v, then

  1. The water in the tube rises to height fraction numerator v to the power of 2 end exponent over denominator 2 g end fraction    
  2. The water in the tube rises to height fraction numerator g over denominator 2 v to the power of 2 end exponent end fraction    
  3. The water in the tube does not rise at all    
  4. None of these    

The correct answer is: The water in the tube rises to height fraction numerator v to the power of 2 end exponent over denominator 2 g end fraction

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