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 )
  A)
                    1.75 mm                            
  done clear
  B)
                                           2.0 mm
  done clear
  C)
                                           1.50mm                             
  done clear
  D)
                                           1.25 mm
  done clear
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