1.

A copper wire of length 4.0m and area of cross-section \[1.2\,c{{m}^{2}}\] is stretched with a force of \[4.8\times {{10}^{3}}\] N. If Young?s modulus for copper is \[1.2\times {{10}^{11}}\,N/{{m}^{2}},\] the increase in the length of the wire will be [MP PET 2001]

A. 1.33 mm
B. 1.33 cm
C. 2.66 mm
D. 2.66 cm
Answer» B. 1.33 cm


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