1.

The stress versus strain graphs for wires of two materials A and B are as shown in the figure. If \[{{Y}_{A}}\]and \[{{Y}_{B}}\] are the Young's moduli of the materials, then                 

A. \[{{Y}_{B}}=2{{Y}_{A}}\]
B. \[{{Y}_{A}}={{Y}_{B}}\] 
C. \[{{Y}_{B}}=3{{Y}_{A}}\]
D. \[{{Y}_{A}}=3{{Y}_{B}}\]
Answer» E.


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