Mechanical Properties of Fluids – Viscosity, Stokes' Law, Surface Tension
Physics · Grade 11 · Week 26 · 25 questions
In Grade 11 physics, Mechanical Properties of Fluids introduces you to Viscosity, Stokes' Law, and Surface Tension. Solid foundations here make later chapters on mechanics, electromagnetism, and modern physics much easier.
What you'll practise
- Analyse Viscosity
- State and apply Stokes' Law
- Identify Surface Tension
- Apply mechanical properties of fluids concepts to NCERT exercise and exemplar problems
All 25 questions in this Mechanical Properties of Fluids – Viscosity, Stokes' Law, Surface Tension quiz
Grade 11 Physics — Mechanical Properties of Fluids – Viscosity, Stokes' Law, Surface Tension: 25 practice questions with instant scoring and explanations.
- Viscosity is the property of fluid by which it:
- SI unit of coefficient of viscosity:
- CGS unit of viscosity:
- Stokes' law: viscous force on sphere F = :
- Terminal velocity of sphere: v_t = :
- Reynolds number Re = :
- Flow becomes turbulent typically for Re:
- Surface tension is due to:
- SI unit of surface tension:
- Surface tension of water decreases with:
- Capillary rise h = :
- Water rises in capillary because:
- Mercury in capillary:
- Excess pressure inside a soap bubble:
- Excess pressure inside a liquid drop:
- Surface energy per unit area equals:
- Two drops of radius r combine. New radius:
- Velocity gradient has units:
- Streamline flow is:
- Critical velocity is:
- Coefficient of viscosity of honey vs water:
- A sphere falls in viscous liquid. Initially it accelerates, then:
- Rain drops achieve constant velocity due to:
- Angle of contact for water-glass is:
- Soap reduces surface tension of water, hence:
Question 1 of 250 correct so far