Question

A student listed applications of some principles as follows

Submarines	Lactometers		Hydrometers	Barometers
p	q		r	s

Identify the applications of Archimedes' principle from the list.

• A. Only $p,q$ and $r$
• B. Only $q,r$ and $s$
• C. Only $r,s$ and $p$
• D. Only $q,p$ and $s$

Answer 1

The correct option is A Only $p,q$ and $r$

According to Archimedes' principle, when a body is immersed fully or partially in a fluid, it experiences an upward force that is equal to the weight of the fluid displaced by it.

Archimedes’ principle has many applications. It is used in designing ships and submarines. Lactometers, which are used to determine the purity of a sample of milk, and hydrometers used for determining the density of liquids, are based on this principle.