Assertion :Strain is the response of a system to an applied stress. When a material is loaded with a force, it produces a stress, which then causes a material to deform. Reason: Ratio of stress and strain always remains constant for a given temperature.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Stress is defined as force applied per unit area. And the strain is the deformation made by the applied force i.e. Stress.
$s t r e s s \propto s t r a i n$
$∴ \frac{s t r e s s}{s t r a i n} = c o n s t a n t$
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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