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The value of true strain produced in compressing a cylinder to half its original length is

1. 0.69
2. -0.69
3. 0.5
4. -0.5

Correct answer: -0.69

Solution

True strain is calculated using the natural logarithm of the ratio of the original length to the final length. When a cylinder is compressed to half its original length, the true strain is negative, reflecting the reduction in length, and evaluates to approximately -0.69.

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