Which of the following is based on Pascal's law?  

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RPF SI Previous Paper 3 (Held On: 5 Jan 2019 Shift 3)
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  1. Centrifuge 
  2. Hydraulic Lift 
  3. Motor
  4. Lever 

Answer (Detailed Solution Below)

Option 2 : Hydraulic Lift 
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Detailed Solution

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CONCEPT:

  • Pascal’s principle: Pascal’s Law is the principle of transmission of fluid-pressure.
    • It says that "a pressure exerted anywhere in a point of the confined fluid is transmitted equally in all directions throughout the fluid”.

F1 J.K Madhu 15.05.20 D1

EXPLANATION:

  1. Centrifuge: Centrifugation is used to separate the contents of mixtures according to their size and density. The centrifuge works on the principle of sedimentation.
  2. Hydraulic Lift: The lift that uses pascal's law and used to lift objects with the help of fluid is called hydraulic lift.  It works on Pascal's law. So option 2 is correct.
  3. Motor: A motor is an electrical device that converts electrical energy into mechanical energy. It works on the principle that a current-carrying conductor experiences a mechanical force when it is placed in a magnetic field.
  4. Lever: A lever is a simple machine that is made up of two load arms and a fulcrum. The distance from the fulcrum can be used to determine how the input and output forces are related to each other.
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