A student wants to determine the volume of about $40\,\text{cm}^3$ of water as precisely as possible. She can choose between two measuring cylinders: one is larger and holds $100\,\text{cm}^3$, while the other is smaller and holds $50\,\text{cm}^3$. At the point where the water meets the glass, a meniscus is visible. Which measuring cylinder should the student select, and which level of the water should be read to obtain an accurate measurement?
Physics 0625 · IGCSE · Physical quantities and measurement techniques