NEET Physics: Mechanical Properties of Fluids — MCQ Test 8

Q6. A spray tube (\( 5 \, \text{cm}^2 \)) has 25 holes of diameter \( 1.0 \, \text{mm} \). If the flow speed is \( 2.4 \, \text{m/min} \), what is the ejection speed?

Q7. A pipe’s cross-sectional area decreases from \( 0.09 \, \text{m}^2 \) to \( 0.03 \, \text{m}^2 \). If water flows at \( 1.5 \, \text{m/s} \) in the larger section, what is the speed in the smaller section?

Q8. A capillary tube of radius \( 0.4 \, \text{mm} \) 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 \( g = 9.8 \, \text{m/s}^2 \))

Q9. Water flows at \( 1.8 \, \text{m/s} \) at \( 2.8 \, \text{m} \) height with pressure \( 1.75 \times 10^5 \, \text{Pa} \). What is the pressure at \( 1.2 \, \text{m} \) height with speed \( 2.6 \, \text{m/s} \)? (\( \rho = 1000 \, \text{kg/m}^3 \), \( g = 10 \, \text{m/s}^2 \))

Q10. A soap film supports \( 3.0 \times 10^{-2} \, \text{N} \) over a \( 50 \, \text{cm} \) slider. What is the surface tension?

Q11. What causes the pressure inside a soap bubble to be higher than outside?

Q12. A capillary tube of radius \( 0.15 \, \text{mm} \) 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 \( g = 9.8 \, \text{m/s}^2 \))

Q13. A car lift uses a small piston of radius \( 4 \, \text{cm} \) to lift a \( 1200 \, \text{kg} \) car on a piston of radius \( 12 \, \text{cm} \). What force is applied on the small piston? (Take \( g = 10 \, \text{m/s}^2 \))

Q14. A plate of area \( 0.06 \, \text{m}^2 \) moves at \( 0.9 \, \text{m/s} \) over a \( 0.5 \, \text{mm} \) thick honey film (\( \eta = 0.2 \, \text{Pa s} \)). What force is required?

Q15. What is the gauge pressure at a depth of \( 2.9 \, \text{m} \) in water (\( \rho = 1000 \, \text{kg/m}^3 \))? (Take \( g = 10 \, \text{m/s}^2 \))

NEET Physics — Mechanical Properties of Fluids

Free MCQ Test 8 of 22

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Medium

A bubble of radius \( 6.5 \, \text{mm} \) is blown at \( 55 \, \text{cm} \) depth in water (\( \rho = 1000 \, \text{kg/m}^3 \), \( S = 0.0727 \, \text{N/m} \)). What is the total pressure inside? (Take \( P_a = 1.01 \times 10^5 \, \text{Pa} \), \( g = 9.8 \, \text{m/s}^2 \))

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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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15
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Key concepts covered in this specific test include Pressure, Hydraulic, Diameter, Ejection, Required, and Sectional.

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 bubble of radius \( 6.5 \, \text{mm} \) is blown at \( 55 \, \text{cm} \) depth in water (\( \rho = 1000 \, \text{kg/m}^3 \), \( S = 0.0727 \, \text{N/m} \)). What is the total pressure inside? (Take \( P_a = 1.01 \times 10^5 \, \text{Pa} \), \( g = 9.8 \, \text{m/s}^2 \))

  • A. 1.05 × 10⁵ Pa
  • B. 1.06 × 10⁵ Pa
  • C. 1.07 × 10⁵ Pa
  • D. 1.08 × 10⁵ Pa

Q2. A hydraulic lift uses a small piston of area \( 0.02 \, \text{m}^2 \) to exert a force of \( 200 \, \text{N} \) to lift a load with a large piston of area \( 0.1 \, \text{m}^2 \). What is the mass of the load? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 80 kg
  • B. 90 kg
  • C. 100 kg
  • D. 110 kg

Q3. A \( 65 \, \text{kg} \) person stands on two bones, each with area \( 20 \, \text{cm}^2 \). What is the average pressure on the bones? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 1.5 × 10⁵ Pa
  • B. 1.6 × 10⁵ Pa
  • C. 1.625 × 10⁵ Pa
  • D. 1.7 × 10⁵ Pa

Q4. A spray tube (\( 6 \, \text{cm}^2 \)) has 30 holes of diameter \( 1.2 \, \text{mm} \). If the flow speed is \( 1.8 \, \text{m/min} \), what is the ejection speed?

  • A. 0.3 m/s
  • B. 0.53 m/s
  • C. 0.8 m/s
  • D. 1.0 m/s

Q5. A plate of area \( 0.09 \, \text{m}^2 \) moves at \( 0.5 \, \text{m/s} \) over a \( 1.0 \, \text{mm} \) thick water film (\( \eta = 1.0 \times 10^{-3} \, \text{Pa s} \)). What force is required?

  • A. 0.04 N
  • B. 0.045 N
  • C. 0.05 N
  • D. 0.06 N

+ 10 more questions in the actual test

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