A composite column is formed by placing a steel bar 20 mm diameter and 200 mm long, inside an alloy cylinder of the same length whose internal and external diameters are 20 mm and 25 mm respectively. The column is then subjected to an axial load of 50 kN. Modulus of elasticity for steel and alloy is 200000MPa and 70000MPa respectively.  Which of the following gives the stress in the alloy? a. 74.80 MPa b. 99.74 MPa c. 46.54 MPa d. 132.98 MPa

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