Bernoulli's Equation
Mediumphysics
Bernoulli's equation neglects which effect?
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Solution
Incorrect! Answer:
Viscosity
- Bernoulli's Principle: States that for an ideal fluid flow, the sum of pressure energy, kinetic energy, and potential energy per unit volume is constant: P+21ρv2+ρgh=const.
- Assumptions for Ideal Flow:
- Incompressible (constant density).
- Irrotational (no turbulence).
- Non-viscous (frictionless).
- Analysis: The formula does not include terms for energy dissipation due to internal friction between layers.
- Conclusion: Viscosity is neglected in the basic Bernoulli derivation.
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About This Question
- Subject
- physics
- Chapter
- properties of solids and liquids
- Topic
- bernoulli's equation
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Viscosity
- Bernoulli's Principle: States that for an ideal fluid flow, the sum of pressure energy, kinetic energy, and potential energy per unit volume is constant: P+21ρv2+ρgh=const.
- Assumptions for Ideal Flow:
- Incompressible (constant density).
- Irrotational (no turbulence).
- Non-viscous (frictionless).
- Analysis: The formula does not include terms for energy dissipation due to internal friction between layers.
- Conclusion: Viscosity is neglected in the basic Bernoulli derivation.
This medium difficulty physics question is from the chapter properties of solids and liquids, covering the topic of bernoulli's equation. It appeared in the 2025 exam.
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