Stress-Strain Curve

Author:Embibe Experts
AP EAPCET
IMPORTANT

Important Questions on Stress-Strain Curve

EASY
IMPORTANT

The diagram shows a force-extension graph for a rubber band. Consider the following statements:
I. It will be easier to compress this rubber than expand it.
II. Rubber does not return to its original length after it is stretched.
III. The rubber band will get heated if it is stretched and released.

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Which of these can be deduced from the graph:

EASY
IMPORTANT

The diagram shown below represents the applied forces per unit area with the corresponding change X (per unit length) produced in a thin wire of uniform cross-section in the curve shown. The region in which the wire behaves like a liquid is

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MEDIUM
IMPORTANT

According to Hooke's law of elasticity, if stress is increased, then the ratio of stress to strain

MEDIUM
IMPORTANT

In case of steel wire (or a metal wire), the elastic limit is reached when