Question
State Archimedes' principle. Write two applications of this principle.
Solution
Archimedes' principle states that when a body is immersed fully or partially in a fluid, it experiences an upward thrust equal to the weight of the fluid displaced by it.
The applications of Archimedes’ principle are:
(i) Archimedes' principle is used in designing ships and submarines.
(ii) Lactometers based on Archimedes' principle are used to measure purity of a sample of milk.
(iii) Hydrometers used to measure density of liquids are based on Archimedes' principle.
