Question

An ideal flow of a liquid obeys:

• A. Continuity equation
• B. Newton's law of viscosity
• C. Newton's second law of motion
• D. Dynamic viscosity law

Hint:

An ideal fluid always satisfies the continuity equation due to mass conservation, but does not follow viscosity-related laws like Newton’s law of viscosity.

Answer 1

The Correct Option is A

Step 1: Understand properties of ideal fluid
An ideal fluid is:
Incompressible
Has no viscosity
No energy loss during motion
Step 2: Continuity equation is a fundamental property of ideal flow
The continuity equation expresses the conservation of mass in fluid dynamics. For an incompressible ideal fluid, it holds true at all times, ensuring that the mass flow rate remains constant from one cross-section of a pipe to another.