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📝 Fluid Density

📖 From Calculus • 7. Applications of the Definite Integral In Geometry, Science, and Engineering • 20 questions available

Practice MCQs for Fluid Density. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-16

7
Easy Questions
9
Medium Questions
4
Hard Questions

📝 Sample Questions

Q1. What is the definition of fluid density?

🔹 A. Mass per unit volume
🔹 B. Weight per unit area
🔹 C. Force per unit length
🔹 D. Pressure per unit depth

💡 Difficulty: easy | ✅ Correct: A

Q2. A vertical rectangular plate 2 m wide and 3 m high is submerged with its top edge at the fluid surface. Using ρ = 1000 kg/m³ and g = 9.81 m/s², what is the total hydrostatic force on the plate?

🔹 A. 8.83×10⁴ N
🔹 B. 9.81×10⁴ N
🔹 C. 7.85×10⁴ N
🔹 D. 1.02×10⁵ N

💡 Difficulty: medium | ✅ Correct: A

Q3. If fluid density varies linearly with depth as ρ = ρ₀(1 + αh), what is the expression for pressure at depth H? (Assume constant g.)

🔹 A. p = ρ₀g(H + αH²/2)
🔹 B. p = ρ₀g(H − αH²/2)
🔹 C. p = ρ₀gH(1 + αH)
🔹 D. p = ρ₀gαH²/2

💡 Difficulty: hard | ✅ Correct: A

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🔗 Related Topics

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