Why is a hydrometer for lighter liquids not used for measuring densities of heavier liquids?

Asked by bjayanta | 2nd Jan, 2016, 01:24: PM

Expert Answer:

Hydrometers works on the basis of law of floatation.
The hydrometer for lighter liquids has a bigger floatation bulb and a smaller gravity bulb as compared with those hydrometers for lighter liquids.
The larger floatation bulb of hydrometers for lighter liquids helps to displace large volume of a given liquid. Hence, hydrometer on the whole does not sink in lighter liquids. The small gravity bulb ensures that the metacentre will be above the centre of gravity. Hence, a hydrometer for lighter liquids is not used for measuring densities of heavier liquids.

Answered by Yashvanti Jain | 4th Jan, 2016, 12:18: PM

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