Q111
Pascal's law is valid, only when the fluid is
A.
Frictionless and at rest
B.
At rest
AnswerC.
At rest and when the frictionless fluid is in motion
D.
None of these
Answer: Option B
Solution
Answer: Option B
Solution:
Pascal's law states that the pressure applied to a confined fluid is transmitted undiminished in all directions throughout the fluid. This law is only valid when the fluid is at rest because any motion would introduce additional forces such as viscosity and turbulence.
A frictionless fluid in motion would not follow Pascal's law due to the influence of dynamic pressure changes.