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A fixed mass of gas is heated at constant volume - AQA - A-Level Physics - Question 9 - 2021 - Paper 2
Question 9
A fixed mass of gas is heated at constant volume. The graph is drawn for this process. What do x and y represent?
Worked Solution & Example Answer:A fixed mass of gas is heated at constant volume - AQA - A-Level Physics - Question 9 - 2021 - Paper 2
Step 1
What do x and y represent?
Answer
In the context of the problem, where a fixed mass of gas is heated at constant volume, the graph presented is a linear relationship that typically represents the relationship between temperature and pressure.
Analysis of Options Given
- A: Pressure in Pa and temperature in °C
- B: Temperature in °C and pressure in Pa
- C: Pressure in Pa and temperature in K
- D: Temperature in K and pressure in Pa
Correct Answer
Given that, when heating a gas at constant volume, the pressure increases with temperature, we can infer that:
- x represents the pressure in Pascals (Pa) and
- y represents the temperature in Celsius (°C). Therefore, the correct choice is A.