A-LevelPhysicsDeformation of solidsOct/Nov 2016Paper 1 Q221 Mark

Four solid steel rods, each of length 2.0 m and cross-sectional area 250 mm², equally support an object weighing 10 kN. The weight of the object causes the rods to contract by 0.10 mm. What is the Young modulus of steel?

Q: What is the correct answer to this A-Level Physics question?

The correct answer is B: 2.0 × 10¹¹ N m⁻².

Q: What topic does this question test?

This question tests Deformation of solids in A-Level Physics (syllabus code 9702). It is worth 1 mark.

A2.0 × 10⁸ N m⁻²

B2.0 × 10¹¹ N m⁻²

C8.0 × 10⁸ N m⁻²

D8.0 × 10¹¹ N m⁻²

✓ Correct Answer

The correct answer is B: 2.0 × 10¹¹ N m⁻²

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Physics Question

Topic

This multiple-choice question tests Deformation of solids in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Oct/Nov 2016 examination, Paper 1 Variant 2.

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