A steel wire and a copper wire of equal length and equal cross-section – McqOptions

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1.	A steel wire and a copper wire of equal length and equal cross-sectional area are joined end to end and the combination is subjected to a tension. Find the ratio of the stresses developed in the two wires and Y of steel\[=2\times {{10}^{11}}N/{{m}^{2}}\]. Y of copper\[=1.3\times {{10}^{11}}N/{{m}^{2}}\].
A.	1
B.	3
C.	5
D.	7
Answer» B. 3

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