O-LevelPhysicsForces5054/12 · Oct/Nov 2021 · Q91 Mark
A metal wire is stretched by a force F up to the limit of proportionality. Which statement describes what happens when F is increased slightly?
AThe wire breaks.
BThe wire continues to extend but not in direct proportion to F.
CThe wire continues to extend in direct proportion to F.
DThe wire does not extend any further.
✓ Correct answer
B: The wire continues to extend but not in direct proportion to F.
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