Question

the length of an iron rod is measured by a brass scale. when both of them are at 10°c, the measured length is 50cm. what is the length of the rod at 40°c when measured by the brass scale at 10°c ? ​

Answer 1

The length of the rod at 40°C when measured by the brass scale at 10°C would be approximately 51.2 cm. This is due to the fact that brass expands more rapidly than iron when exposed to heat, causing the brass scale to measure a length slightly longer than the actual length of the iron rod.