1.

A stress of `10^(6) N//m^(2)` is required for breaking a material. If the density of the material is `3 xx 10^(3) Kg//m^(3)`, then what should be the minimum length of the wire made of the same material so that it breaks by its own weight `(g = 10m//s^(2))`A. 66.6 mB. 60.0 mC. 33.3 mD. 30.0 m

Answer» Correct Answer - C
Breakign stress `=(mg)/("Area") =(Al rho g)/(A)=rho l g`
`therefore l=("Breaking stress")/(rho g)`
`=(10^(6))/(3xx10^(3)xx10)=33.33m`


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