If a material is stretched beyond its elastic limit, what happens?

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Question: If a material is stretched beyond its elastic limit, what happens?

Options:

Correct Answer: It undergoes permanent deformation

Solution:

When a material is stretched beyond its elastic limit, it undergoes permanent deformation and does not return to its original shape.

If a material is stretched beyond its elastic limit, what happens?

If a material is stretched beyond its elastic limit, what happens?

Step 1: Understand what the elastic limit is. It is the maximum amount a material can be stretched without changing its shape permanently.
Step 2: When a material is stretched within its elastic limit, it can return to its original shape once the force is removed.
Step 3: If the material is stretched beyond this limit, it cannot return to its original shape.
Step 4: This means the material will have a permanent change in shape or size, known as permanent deformation.

Elastic Limit – The maximum extent to which a material can be stretched without undergoing permanent deformation.
Permanent Deformation – The change in shape or size of a material that remains after the removal of the applied stress.