O-LevelPhysicsForces5054/11 · May/June 2014 · Q121 Mark
The graph shows the extension of a piece of copper wire as the load on it is increased. What does the graph show?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AAt a certain load the wire becomes easier to extend.
BAt a certain load the wire becomes harder to extend.
CThe load and extension are directly proportional for all loads.
DThe load and extension are inversely proportional for all loads.
✓ Correct answer
A: At a certain load the wire becomes easier to extend.
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