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NEET UG Experimental Skills — practice questions — page 2

Explore 43 free Experimental Skills questions in NEET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Experimental Skills questions and exercises with answers

Showing questions 31–43 of 43.

By Stokes' law, the viscous drag on a small sphere is proportional to:Read the answer and worked solution →The falling-sphere viscometer works on which law?Read the answer and worked solution →Stokes' law for drag on a sphere assumes which type of flow?Read the answer and worked solution →Stokes' law gives the drag on spheres moving at what kind of Reynolds number?Read the answer and worked solution →If a sphere's radius doubles, its terminal velocity in the same liquid becomes:Read the answer and worked solution →Why is Stokes terminal speed proportional to R squared?Read the answer and worked solution →A sphere less dense than the fluid it is in reaches a terminal velocity directed:Read the answer and worked solution →The CGS unit of kinematic viscosity, named after Stokes, is the:Read the answer and worked solution →In which year did George Gabriel Stokes derive his drag law?Read the answer and worked solution →In a falling-sphere viscometer, the terminal speed is found by timing the ball between:Read the answer and worked solution →What is the SI unit of dynamic viscosity used in Stokes' law?Read the answer and worked solution →Stokes' law explains why tiny cloud droplets stay in the air until they:Read the answer and worked solution →Ball radius 1 mm, viscosity 1 Pa s, density excess 900 kg/m3, g = 10 m/s2. Terminal speed?Read the answer and worked solution →

Worked practice questions

By Stokes' law, the viscous drag on a small sphere is proportional to:

  1. Velocity squared
  2. Square of radius only
  3. Radius over velocity
  4. Radius times velocity
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Correct answer: D. Radius times velocity

Stokes drag equals 6 pi times viscosity times radius times velocity, so it scales with the product of radius and speed.

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The falling-sphere viscometer works on which law?

  1. Stokes' law
  2. Hooke's law
  3. Ohm's law
  4. Boyle's law
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Correct answer: A. Stokes' law

A falling-sphere viscometer finds viscosity from a sphere's terminal speed using Stokes' law.

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Stokes' law for drag on a sphere assumes which type of flow?

  1. Pulsating flow
  2. Supersonic flow
  3. Turbulent flow
  4. Laminar flow
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Correct answer: D. Laminar flow

Stokes' law assumes smooth laminar flow with no inertial effects around the sphere.

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More Physics topics

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