Neco Model Questions Vol1 2022 Physics Question 7

Practice essay / theory question 7 from the 2022 Neco Model Questions Vol1 Physics examination. This question covers Pressure, Boyle's law, Ideal gas law, Thermodynamics .

Neco Model Questions Vol1 2022 Physics Essay / Theory
Topics: Pressure Boyle's law Ideal gas law Thermodynamics
Question 7 NECO_MODEL_QUESTIONS_VOL1 • 2022 • PHYSICS • essay

A sealed vertical cylindrical container of cross‑sectional area 2.0×10⁻³ m² contains dry air at 300 K and a pressure of 1.0×10⁵ Pa. A frictionless piston of negligible mass rests on the air. The piston is slowly pushed down until the volume of the trapped air is reduced to one‑half of its original value.

Question Parts

( a )
Determine the new pressure of the air after the compression, assuming the temperature remains constant.
( b )
The piston is now heated uniformly until the temperature of the trapped air rises to 450 K. The piston is free to move and the external atmospheric pressure remains 1.0×10⁵ Pa. Determine (i) the final volume of the air and (ii) the work done by the gas during this heating process.
( c )
Discuss qualitatively how the reading on a manometer connected to the container would change during the two stages described above, and explain the difference between gauge pressure and absolute pressure in this context.

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About This Question

This is Neco Model Questions Vol1 2022 Physics Question 7. It is one of the essay questions from the 2022 Neco Model Questions Vol1 Physics examination.

The question covers Pressure, Boyle's law, Ideal gas law, Thermodynamics .

View More Neco Model Questions Vol1 2022 Physics Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

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