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AQA A Level Physics Paper 3 Section 1 Exam Questions & Answers
AQA A Level Physics Paper 3 Section 1 Exam Questions & Answers 
 
 
What is a set square used for? (5 uses) - ANSWERSA set square is a right-angled triangle used to: 
- Determine whether an object is vertical, 
- Determine whether two objects are at right angles to each other, 
- Determine whether two lines are parallel, 
- Measure the diameter of a circular cross-section (using 2 set squares and a ruler), 
- Make sure your eyes are level (reducing parallax error). 
 
NB: similar to a set square...