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Q.

Which of the following instruments works on Archimedes principle?

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a

Hydrometer 

b

Voltmeter

c

Ohmmeter

d

Galvanometer

answer is B.

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Detailed Solution

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  • The fundamental component of a hydrometer is a weighted, sealed, long-necked glass bulb submerged in the liquid being measured. 
  • The density of the liquid is indicated by the flotation depth, and the neck of the hydrometer can be calibrated to read the actual gravity value. 
  • Archimedes' principle is the foundation of a hydrometer used to measure the density of liquids.
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