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Breaking stress for a material is 2 xx 1...

Breaking stress for a material is `2 xx 10^8 N//m^2`. What maximum length of the wire of this material can be taken t the wire does not break by own weight? Density of material = `5 xx 10^3 kg//m^3`

A

1 km

B

2 km

C

3 km

D

4 km

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