JAMB Physics 2006 Question 40

Question 40

Elasticity

The diagram above represents the stress-strain graph for a typical metal rod. What does X represent?

A.Yield point
B.Breaking point
C.Elastic limit
D.Proportional limit

Show the answer and explanation

Answer: B (Breaking point)

Explanation

The straight part ends at the proportional/elastic limit and the small dip is the yield point. The curve stops at X, where the rod breaks, so X is the breaking point.