Exam-style question
Try this first
If the pressure of a gas is doubled while keeping the temperature constant, what happens to its volume? Scenario focus: use thermal physics in a distinct A-Level Physics context and identify the relevant physical quantity before choosing the answer.
- A.It doubles
- B.It halves
- C.It remains the same
- D.It quadruples
Model answer
What a good answer should say
- It halves
Explanation
Why this works
The correct answer is It halves. This option is correct for Thermal physics because it applies the thermal physics idea in the stem and keeps the relevant quantity, unit, and physical conclusion together.
The alternatives either use a neighbouring formula, omit a required variable, or describe a different physical situation.
Common mistake
No common mistake is linked to this question yet.