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A wire of length 1 m and radius 1mm is s...

A wire of length `1 m` and radius `1mm` is subjected to a load. The extension is `x`.The wire is melted and then drawn into a wire of square cross - section of side `2 mm` Its extension under the same load will be

A

`pi^(2) x`

B

`pix^(2)`

C

`pi x`

D

`pi//x`

Text Solution

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The correct Answer is:
A
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