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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 | |