In the question number 55, the ratio of elongation of steel to the cop

1.	In the question number 55, the ratio of elongation of steel to the copper wires is
Answer» `(5)/(2)` `(2)/(5)` `(3)/(2)` `(2)/(3)` SOLUTION :From Eq.(i), of THEABOVESOLUTION,we get`(DeltaL_(S))/(DeltaL_(C)) = (L_(S))/(L_(C)) xx (Y_(C))/(Y_(S))` Substitution the GIVEN values,we get `(DeltaL_(S))/(DeltaL_(C)) = (1.6 m)/(2.4 m)xx (1.2 xx 10^(11) N m^(-2))/(2 xx 10^(11) N m^(-2)) = (2)/(5)`

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