NEET Physics: Mechanical Properties of Fluids — MCQ Test 11

Q6. A hydraulic system has a small piston (\( 0.005 \, \text{m}^2 \)) and a large piston (\( 0.025 \, \text{m}^2 \)). If \( 80 \, \text{N} \) is applied on the small piston, what force does the large piston exert?

Q7. A tank has a hole \( 1.7 \, \text{m} \) below the water surface, open to the atmosphere. What is the efflux speed? (Take \( g = 9.8 \, \text{m/s}^2 \))

Q8. Why is pressure considered a scalar quantity despite being defined as force per unit area?

Q9. A \( 55 \, \text{kg} \) person stands on two bones, each with area \( 14 \, \text{cm}^2 \). What is the average pressure on the bones? (Take \( g = 10 \, \text{m/s}^2 \))

Q10. A bubble of radius \( 4.5 \, \text{mm} \) is blown at \( 35 \, \text{cm} \) 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 \( P_a = 1.01 \times 10^5 \, \text{Pa} \), \( g = 9.8 \, \text{m/s}^2 \))

Q11. Why is the pressure of the atmosphere measured as the weight of a column of air?

Q12. A capillary tube of radius \( 0.25 \, \text{mm} \) 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 \( g = 9.8 \, \text{m/s}^2 \))

Q13. A \( 75 \, \text{kg} \) person stands on two bones, each with area \( 24 \, \text{cm}^2 \). What is the average pressure on the bones? (Take \( g = 9.8 \, \text{m/s}^2 \))

Q14. A pipe has a cross-sectional area of \( 0.02 \, \text{m}^2 \) at one end and \( 0.01 \, \text{m}^2 \) at the other. If water flows at \( 2 \, \text{m/s} \) through the wider end, what is the speed at the narrower end?

Q15. Which statement is incorrect about the Magnus effect?

NEET Physics — Mechanical Properties of Fluids

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What ensures that the braking effort is equal on all wheels in a hydraulic brake system?

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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, Assumption, Bernoulli, Principle, Application, and Spherical.

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. What ensures that the braking effort is equal on all wheels in a hydraulic brake system?

  • A. Viscosity of the fluid
  • B. Surface tension
  • C. Equal pressure transmission
  • D. Streamline flow

Q2. What assumption does Bernoulli’s principle make about fluid flow that limits its application to real fluids?

  • A. Fluid is compressible
  • B. Zero viscosity
  • C. Turbulent flow
  • D. Constant density

Q3. Why do liquid drops tend to be spherical in the absence of external forces?

  • A. Due to viscosity
  • B. Because of pressure inside
  • C. Surface tension minimizes surface area
  • D. Due to buoyancy

Q4. Which of the following statements is correct about a barometer?

  • A. It measures fluid viscosity
  • B. It uses water for accuracy
  • C. It measures atmospheric pressure
  • D. It depends on surface tension

Q5. A spray tube (\( 4 \, \text{cm}^2 \)) has 20 holes of diameter \( 1.4 \, \text{mm} \). If the flow speed is \( 1.8 \, \text{m/min} \), what is the ejection speed?

  • A. 0.3 m/s
  • B. 0.39 m/s
  • C. 0.45 m/s
  • D. 0.5 m/s

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