A-LevelPhysicsDeformation of solidsMay/June 2014Paper 1 Q191 Mark

A sample of metal is subjected to a force which increases to a maximum value and then decreases back to zero. A force-extension graph for the sample is shown. [Figure 19.1] When the sample contracts it follows the same force-extension curve as when it was being stretched. What is the behaviour of the metal between X and Y?

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

The correct answer is D: elastic but not plastic.

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.

Aboth elastic and plastic

Bnot elastic and not plastic

Cplastic but not elastic

Delastic but not plastic

✓ Correct Answer

The correct answer is D: elastic but not plastic

📋 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 May/June 2014 examination, Paper 1 Variant 2.

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