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Question

If stress is numerically equal to young's modulus,the elongation will be


A
1/4 the original length
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B
1/2 the original length
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C
equal to the original length
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D
Twice the original length
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Solution

The correct option is C equal to the original length

The ratio of stress to strain is known as the elastic modulus of the material.

Elastic Modulus, $$E=\dfrac{stress}{strain}$$

When the change in elongation to the original length is minimal, then the modulus of elasticity is dimensionally equivalent to the stress.


Physics

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