AP EAMCET Medical 24 Apr 2019 Shift 2 Paper

A composite steel rod PQR is made of two rods PQ and QR as shown in figure. The lengths of two rods PQ and QR are 20 cm and 10 cm respectively. The area of cross - section of the longer rod is 2 × 10−4m2 and that of the shorter rod is 1 × 10−4m2. If the composite rod is stretched with a force of 50 × 103 N. the total elongation produced is (Young's modulus of steel = 20 × 1010Nm−2)