Iron sheet 50 cm × 20 cm is heated through 100 °C. If a = 12 × 10-6 / °C, the change in area is
A. 2.4 cm2
B. 3.4 cm2
C. 4.2 cm2
D. 5.3 cm2
Answer:A
Iron sheet 50 cm × 20 cm is heated through 100 °C. If a = 12 × 10-6 / °C, the change in area is
A. 2.4 cm2 B. 3.4 cm2 C. 4.2 cm2 D. 5.3 cm2