A hydrometer is an instrument for measuring the

Assessment: JAMB UTME - Physics - 1982 Subject: Physics

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A hydrometer is an instrument for measuring the
Answer Details
A hydrometer is an instrument used to measure the relative density of a liquid by the method of flotation. It consists of a graduated glass tube with a weight at the bottom to make it float vertically in the liquid. The level at which the surface of the liquid touches the scale on the tube is a measure of the relative density of the liquid. Hydrometers are commonly used in industry and laboratories to measure the density of liquids such as acids, alkalis, and electrolytes.
Read lesson note on Liquids At Rest (JAMB)
Read lesson note on Measurements And Units (JAMB)
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