Physics · May / June 2017 · Paper 11 · Question 11
The graph shows the extension of a piece of copper wire as the load on it is increased. What does the graph show?
- AAt a certain load, the wire becomes easier to extend.
- BAt a certain load, the wire becomes harder to extend.
- CThe load and the extension are directly proportional for all loads.
- DThe load and the extension are inversely proportional for all loads.
As printed in the paper
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Correct answer: A. At a certain load, the wire becomes easier to extend.
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