The coefficient of linear expansion of iron is 1.1 × 10-5 per K. An iron is 10 m long at 27 °C. Length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to
A. 0°C
B. 10 °C
C. 17 °C
D. 20 °C
Answer:C
The coefficient of linear expansion of iron is 1.1 × 10-5 per K. An iron is 10 m long at 27 °C. Length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to
A. 0°C B. 10 °C C. 17 °C D. 20 °C