The following are some examples of how various ideas can be used, according to a student.
Submarines Lactometers Hydrometers Barometers
p q r s
Identify the applications of Archimedes' principle from the list

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Only q, p and s

Only q , r and s

Only p, q and r

Only r, s and p

answer is A.

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Detailed Solution

The principle of Archimedes can be used in a variety of situations. It's employed in the construction of ships and submarines.

This idea is employed in lactometers, which are used to measure the purity of a sample of milk, and hydrometers, which are used to determine the density of liquids. As a result, option 'a' is right.

The hydrometer is made out of a weighted, sealed, long-necked glass bulb that is immersed in the liquid being measured; the floatation depth indicates the density of the liquid, and the neck can be calibrated to read the actual gravity value. A barometer is a scientific tool for determining air pressure.

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