The Coefficient of Linear Expansion of Copper Is 17 ×

Multiple Choice

The coefficient of linear expansion of copper is 17 × 10^-6 K^-1 and that of steel is 12 × 10^-6 K^-1. At 12°C a steel rod has a diameter of 2.540 cm and a copper pipe has a diameter of 2.536 cm. Which one of the following quantities is closest to the temperature to which the copper pipe must be heated in order for the unheated steel rod to fit snugly in the copper pipe?

A) 53°C
B) 81°C
C) 93°C
D) 105°C
E) 143°C