Gce Model Questions Vol1 2020 Physics Question 4

Practice objective / multiple choice question 4 from the 2020 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2020 Physics Objective / Multiple Choice Medium Difficulty
Question 4 GCE_MODEL_QUESTIONS_VOL1 • 2020 • PHYSICS • objective

A cylinder fitted with a movable piston contains \(0.50\ \text{mol}\) of an ideal gas at \(300\ \text{K}\) and \(1.00\ \text{atm}\). The gas is heated at constant volume to \(450\ \text{K}\). The piston is then allowed to move so that the gas expands isothermally at \(450\ \text{K}\) until its pressure falls to \(0.50\ \text{atm}\). (a) Calculate the final volume of the gas. (b) Calculate the work done by the gas during the isothermal expansion (in joules). (c) Calculate the change in internal energy of the gas for the whole process (in joules). Assume the gas is monatomic.

Answer Options

A. V_f = 33.0 L, W = 2.10×10^3 J, ΔU = 7.50×10^2 J
B. V_f = 39.5 L, W = 2.30×10^3 J, ΔU = 1.02×10^3 J
Correct Answer C. V_f = 36.9 L, W = 2.06×10^3 J, ΔU = 9.35×10^2 J
D. V_f = 34.2 L, W = 1.85×10^3 J, ΔU = 8.10×10^2 J
Correct Answer
C
Correct Option:
V_f = 36.9 L, W = 2.06×10^3 J, ΔU = 9.35×10^2 J

About This Question

This is Gce Model Questions Vol1 2020 Physics Question 4. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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