A steel railway track is long at

PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A steel railway track is

30\,\text{m}

long at

15\,^{\circ}\text{C}

. If its coefficient of linear expansion is

1.2\times10^{-5}\,\text{K}^{-1}

, calculate the increase in length when the temperature rises to

45\,^{\circ}\text{C}