NEET Physics: Mechanical Properties of Fluids — MCQ Test 3

Q6. What is the gauge pressure at a depth of \( 0.9 \, \text{m} \) in whole blood (\( \rho = 1.06 \times 10^3 \, \text{kg/m}^3 \))? (Take \( g = 10 \, \text{m/s}^2 \))

Q7. Water (\( \rho = 1000 \, \text{kg/m}^3 \)) flows horizontally at \( 3.8 \, \text{m/s} \) with pressure \( 1.8 \times 10^5 \, \text{Pa} \). If the speed increases to \( 6.2 \, \text{m/s} \), what is the new pressure?

Q8. What causes a liquid to form a concave meniscus in a glass tube?

Q9. A capillary tube of radius \( 0.45 \, \text{mm} \) is dipped in water (\( S = 0.0727 \, \text{N/m} \), \( \rho = 1000 \, \text{kg/m}^3 \), \( \cos \theta = 1 \)). What is the capillary rise? (Take \( g = 9.8 \, \text{m/s}^2 \))

Q10. A capillary tube of radius \( 0.1 \, \text{mm} \) is dipped in water (\( S = 0.073 \, \text{N/m} \), \( \rho = 1000 \, \text{kg/m}^3 \)). What is the height of capillary rise? (Take \( g = 10 \, \text{m/s}^2 \), \( \cos \theta = 1 \))

Q11. A soap bubble of radius \( 7 \, \text{mm} \) has an excess pressure of \( 20 \, \text{Pa} \) inside. What is its surface tension?

Q12. A \( 60 \, \text{kg} \) person stands on two cylindrical bones, each of cross-sectional area \( 15 \, \text{cm}^2 \). What is the average pressure on the bones? (Take \( g = 10 \, \text{m/s}^2 \))

Q13. Which of the following statements is correct regarding Pascal’s law?

Q14. A hydraulic system applies \( 300 \, \text{N} \) on a small piston of area \( 0.015 \, \text{m}^2 \). What force is exerted by a large piston of area \( 0.045 \, \text{m}^2 \)?

Q15. A soap bubble of radius \( 8 \, \text{mm} \) has a surface tension of \( 0.026 \, \text{N/m} \). What is the excess pressure inside?

NEET Physics — Mechanical Properties of Fluids

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A hydraulic lift raises a \( 1400 \, \text{kg} \) load using a small piston of radius \( 2.5 \, \text{cm} \) and a large piston of radius \( 10 \, \text{cm} \). What force is applied on the small piston? (Take \( g = 9.8 \, \text{m/s}^2 \))

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Mechanical Properties of Fluids. It contains 15 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Hydraulic, Capillary, Diameter, Ejection, Solution, and Pressure.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A hydraulic lift raises a \( 1400 \, \text{kg} \) load using a small piston of radius \( 2.5 \, \text{cm} \) and a large piston of radius \( 10 \, \text{cm} \). What force is applied on the small piston? (Take \( g = 9.8 \, \text{m/s}^2 \))

  • A. 700 N
  • B. 858 N
  • C. 900 N
  • D. 1000 N

Q2. A capillary tube of radius \( 0.35 \, \text{mm} \) is dipped in ethanol (\( S = 0.0227 \, \text{N/m} \), \( \rho = 806 \, \text{kg/m}^3 \), \( \cos \theta = 1 \)). What is the capillary rise? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 1.2 cm
  • B. 1.6 cm
  • C. 2.0 cm
  • D. 2.4 cm

Q3. A spray tube (\( 6 \, \text{cm}^2 \)) has 30 holes of diameter \( 1.1 \, \text{mm} \). If the flow speed is \( 3.6 \, \text{m/min} \), what is the ejection speed?

  • A. 1.0 m/s
  • B. 1.2 m/s
  • C. 1.3 m/s
  • D. 1.5 m/s

Q4. A bubble of radius \( 4.0 \, \text{mm} \) is blown at \( 60 \, \text{cm} \) depth in a soap solution (\( \rho = 1.2 \times 10^3 \, \text{kg/m}^3 \), \( S = 0.025 \, \text{N/m} \)). What is the total pressure inside? (Take \( P_a = 1.01 \times 10^5 \, \text{Pa} \), \( g = 10 \, \text{m/s}^2 \))

  • A. 1.07 × 10⁵ Pa
  • B. 1.08 × 10⁵ Pa
  • C. 1.09 × 10⁵ Pa
  • D. 1.10 × 10⁵ Pa

Q5. A soap bubble of radius \( 10 \, \text{mm} \) has a surface tension of \( 0.025 \, \text{N/m} \). What is the excess pressure inside?

  • A. 8 Pa
  • B. 10 Pa
  • C. 12 Pa
  • D. 15 Pa

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