An ideal gas has a volume of 3.1 × 10⁻³m³ at a pressure of 8.5 × 10⁵ Pa and a temperature of 290 K, as shown in [Figure 2.1]. The gas suddenly expands to a volume of 6.3 × 10⁻³m³. During the expansion, no thermal energy is transferred. The final pressure of the gas is 2.7 × 10⁵ Pa at temperature T_F, as shown in [Figure 2.1].

Q: What topic does this question test?

This question tests Ideal gases in A-Level Physics (syllabus code 9702). It is worth 9 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Physics May/June 2021 examination, Paper 4 Variant 2 (9702_s21_qp_42.pdf).

Question

An ideal gas has a volume of 3.1 × 10⁻³m³ at a pressure of 8.5 × 10⁵ Pa and a temperature of 290 K, as shown in [Figure 2.1]. The gas suddenly expands to a volume of 6.3 × 10⁻³m³. During the expansion, no thermal energy is transferred. The final pressure of the gas is 2.7 × 10⁵ Pa at temperature T_F, as shown in [Figure 2.1].

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