PhysicsThe force acting tangential to the layers of the liquid is called :

The force acting tangential to the layers of the liquid is called :

  1. A

    Buoyant force

  2. B

    Viscous drag

  3. C

    Frictional force

  4. D

    Gravitational force

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    Solution:

    • Viscous drag is a backward dragging force that occurs tangentially on the layers of a fluid in motion and tends to stop it from moving.
    • Similar to friction, which changes kinetic energy into thermal energy, viscosity does the same. 
    • When a fluid is moving, viscosity—which is seen as an internal resistance—comes into play.

    Hence the correct answer is viscous drag.

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