Physics - Heat & Thermo Question with Solution | TestHub

A thermometer has a spherical bulb of volume $1{\mathrm{cm}}^3$ having $1{\mathrm{cm}}^3$ of mercury. A long cylindrical capillary tube is connected to spherical bulb. Volumetric coefficient of expansion of mercury is $1.8\times 10^{-4}{\mathrm{K}}^{-1}$; cross-section area of capillary is $1.8\times 10^{-4}{\mathrm{cm}}^2$. Ignoring expansion of glass, how far apart (in cm ) on the stem are marks indicating 1 K temperature change?