Question

Pick out the option which is not an application of Archimedes principle.

• A. It is used in designing of ship and submarines.
• B. In lactometers, to determine the purity of milk.
• C. In hydrometers to determine density of fluids.
• D. It is used in designing of laboratory thermometers.

Answer 1

The correct option is D

It is used in designing of laboratory thermometers.

Archimedes principle states that the upward buoyant force that is exerted on an object which is immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the object displaces.
It is used in the designing of ships, submarines. It is also used in lactometers and hydrometers as adulteration causes a change of density which can be easily identified using these tools. Archimedes principle has nothing to deal with the designing of thermometers.