(a) 'Lactometers are used to determine the purity of a sample of milk'. State the principle on which this instrument is based on. (b) Write two factors on which the buoyant force acting on a body when immersed in a liquid depends.
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Lactometers is based on Archemedes principle which stated -if body is immersed fully or partially in a fluid it experiences an upward force which is equal to weight of the displaced by it. Factors of Buoyant force are- 1 density of liquid and 2 magnitude of force.
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