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NEET2005PhysicsMechanical Properties of FluidsActual

Assertion : For Reynold number R_e>2000 , the flow of fluid is turbulent. Reason : Inertial forces are dominant compared to the viscous forces at such high Reynold numbers.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion

Step-by-step solution

Reynold's number represents the ratio of the inertial force is refer as inertia (mass of moving fluid) per unit area to the viscous force per unit area. When R_e>2000 , the flow is often turbulent in that case internal force dominate viscous force.

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