Exam-style question
Try this first
In a beta decay process, which quark changes to which?.
- A.up to down
- B.down to up
- C.strange to up
- D.up to strange
Model answer
What a good answer should say
- up to down.
- the correct option
Explanation
Why this works
The correct answer is up to down. It is the only option that matches the AQA A-Level Physics requirement for Quarks and antiquarks; the distractors either apply to a different particle concept or reverse the relationship being tested.
Common mistake
No common mistake is linked to this question yet.