Liquid Expansion & Thermal Effects on Devices
Mercury Column Length Increase
The coefficient of volumetric expansion of mercury is 18 × 10⁻⁵ /°C. The thermometer bulb has a volume of 10⁻ ⁶ m³ and cross-section of the stem is 0.002 cm². Assuming that bulb is filled with mercury at 0°C, the increase in length of the mercury column at 100°C will be