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Dimensional Analysis

A steel wire ...

Question

A steel wire is stretched by $1 k g w t$ . If the radius of the wire is doubled, its Young's modulus will

A

Remain unchanged

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B

Become half

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C

Become double

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D

Become four times

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Solution

The correct option is A Remain unchanged
Young's modulus is an internal property of materials and is independent of stress applied, till the elastic limit.

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