An extension-load graph is plotted to show the result of increasing the load on a spring.
Which point
marks the limit
of proportionality for this spring?
Correct
Answer: B
Explanation:
The limit of proportionality means the maximum force or stress that you can
apply to an elastic body without causing any permanent shape change or
deformation. The phrase “limit of proportionality” itself means the limit up
to which the condition of proportionality will meet. So, it can easily be seen
here in the graph that after point B the the graph is not a straight line i. e. the condition of “proportionality” is
violated. So the answer will be B.
