Solved papers for JEE Main & Advanced JEE Main Online Paper (Held On 23 April 2013)
done JEE Main Online Paper (Held On 23 April 2013) Total Questions - 1
question_answer1) A copper wire of length 1.0 m and a steel wire of length 0.5 m having equal cross-sectional areas are joined end to end. The composite wire is stretched by a certain load which stretches the copper wire by 1 mm. if the young?s modulii of copper and steel are respectively \[1.0\times {{10}^{11}}{{\operatorname{Nm}}^{-2}}\]and\[2.0\times {{10}^{11}}\,N{{m}^{-2}}\], the total extension of the composite wire is:
[JEE Main Online Paper ( Held On 23 April 2013 )