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The breaking stress of steel is 7.9xx10^...

The breaking stress of steel is `7.9xx10^9 Nm^(-2)` and density of steel is `7.9xx10^3 kgm^(-3)` and `g = 10ms^(-2)` . The maximum length of steel wire that can hang vertically without breaking is

A

`10^(3)m`

B

`10^(4)m`

C

`10^(2)m`

D

`10^(5)m`

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The correct Answer is:
4
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