question_answer 34)

                  A copper and a steel wire of the same diameter are connected end to end. A deforming force F is applied to this composite wire which causes a total elongation of 1 cm. The two wires will have                 (a) the same stress         (b) different stress                 (c) the same strain          (d) different strain                

Answer:

                  (a, d) Stress \[=\frac{F}{A}\] and strain \[\text{=}\frac{\text{change}\,\,\text{in}\,\,\text{length}}{\text{original}\,\,\text{length}}\]