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NEST2017PhysicsMechanical Properties of Fluids

A 3.0 m long metal pipe, closed at the top end, is held vertically above a large water tank. It is then very slowly pushed vertically down into the water and held there such that the top end of the pipe is at level with the water surface. Take the density of water to be 1000 kgm ^3 . Then

Options

  1. Athe length of the trapped air column is 2.8 m .
  2. Bthe pressure of the trapped air is 1.24 times the atmospheric pressure.
  3. Cthe entropy of the air in the pipe decreases in this process.
  4. Dthe pipe executes simple harmonic oscillation when the top end of the pipe is released.

Correct answer

C. the entropy of the air in the pipe decreases in this process.

Step-by-step solution

No solution available.

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