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If a wire's length is doubled and its radius is halved compared with their original values, what happens to the Young's modulus of the wire's material?

1. Remains the same
2. Becomes 8 times its initial value
3. Becomes 1/4 of its initial value
4. Becomes 4 times its initial value

Correct answer: Remains the same

Solution

Young's modulus depends only on the nature of the material, not on its dimensions, so changing length or radius leaves it unchanged.

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