Physics – Pressure

1. Which among the following equations represents Torricelli’s law?

  1. F = ma
  2. v = sqrt(2gh)
  3. E = mc^2
  4. PV = nRT
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Answer: Option B. v = sqrt(2gh)

2. What is the equivalent value of 1 atmosphere?

  1. 1 atm = 101325 Pa
  2. 1 atm = 11325 Pa
  3. 1 atm = 1001325 Pa
  4. 1 atm = 1013250 Pa
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Answer: Option A. 1 atm = 101325 Pa

3. Which principle is hydraulic lift based on?

  1. Archimedes’ principle
  2. Pascal’s law
  3. Bernoulli’s principle
  4. Boyle’s law
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Answer: Option B. Pascal’s law

4. What is the name of the device used to measure the flow speed of incompressible fluids?

  1. Manometer
  2. Anemometer
  3. Hygrometer
  4. Venturi-meter
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Answer: Option D. Venturi-meter

5. Who is credited with the invention of the mercury barometer?

  1. Galileo Galilei
  2. Johannes Kepler
  3. Evangelista Torricelli
  4. Isaac Newton
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Answer: Option C. Evangelista Torricelli