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Four wires made of Al, Cu, Fe and steel ...

Four wires made of Al, Cu, Fe and steel and of lengths `l_1 = 100m, l_2 = 150m, l_3 = 250m `and `l_4 = 350m,` break due to their own weights. Arrange these wires with their breaking stresses in ascending order
`d_(Al) = 7500 kg//m^2 , d_(Cu) 7800 kg//m^3 , d_(Fe) = 9000kg//m^2 , d_("steel") = 11000 kg//m^3`

A

St, Fe, Al, Ci

B

St, Fe, Cu, Al

C

Al, Cu, Fe, St

D

Fe, St, Al, Cu

Text Solution

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The correct Answer is:
C
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