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”.
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.