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Which of the following best explains the phenomenon observed when a suction pump is removed from a U-tube containing mercury with a small pressure difference, causing the column of mercury in the U-tube to execute simple harmonic motion?

Options

  1. AThe U-tube undergoes random vibrations due to the sudden pressure change.
  2. BThe mercury column collapses and stops moving.
  3. CThe mercury column oscillates back and forth as a result of restoring forces.
  4. DThe mercury column immediately settles at its new equilibrium position.

Correct answer

C. The mercury column oscillates back and forth as a result of restoring forces.

Step-by-step solution

Correct Option is : (C) The mercury column oscillates back and forth as a result of restoring forces.

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