Q.

A stepped bar of steel consists of a pmormtion with cross section area 500 mm2 connected to a portion with cross section area 1000 2. Each portion has a length of 1 m. The modulus of elasticity of steel is
200 GPa. The maximum elongation of the bar by applying an axial tensile force at the ends without exceeding a stress of 100 MPa is
   mm.

A. 0.5
B. 0.75
C. 0.1
D. 0.15
Answer» B. 0.75
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