1
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A steel wire of length 4.7 m and cross-sectional area $$3.0\times10^{-5}$$ m$$^2$$ stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area of $$4.0\times10^{-5}~\mathrm{m^2}$$ under a given load. What is the ratio of Young's modulus of steel to that of copper?

A
1.8 : 1
B
2.8 : 1
C
3.8 : 1
D
4.8 : 1
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