What are the applications of Archimedes' principle ?

It is used in hydraulic lifts.

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It is used in designing of ships and submarines.

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It is used in hydrometers to determine density of fluids.

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It is used in lactometers to determine the purity of milk.

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Solution

The correct option is D It is used in lactometers to determine the purity of milk.
Archimedes' principle is used in designing of ships and submarines. They are to be made of a specific dimensions so that in spite of the large value of density of steel, the ship would float in water.

Lactometers also work on Archimedes' principle as adulteration causes a change of density which can easily be identified using this device.

Archimedes' principle provides the principle of working of a hydrometer, which is used to determine the density of fluids using water.

Hydraulic lifts work on the principle of Pascal's law.

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