The breaking limit depends on the strain (i.e. the ratio of extension to original length), not the length alone. So, even if the cable is cut in half, each part can still be stretched up to the same limit of 2 mm without breaking.
A cable breaks if stretched by more than 2mm. It is cut into two equal parts. By how much either part can be stretched without breaking?
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Question context
This question is part of ⚙️ Mechanical Eng within the broader 🛠️ Engineering Essentials subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.