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Write Brief Answers. - SSC (English Medium) Class 8 - Science

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Question

Write brief answers.

Explain with the help of formulae the expansion coefficients of liquid and gas. 

Solution

The formula for liquid expansion or gas is

V2 = V1 (1 + β Δ T)
or 

β = `(("V"_2 - "V_1")/"V"_1) 1/ (triangle T)`

From the above formula, we can say that

  • the volumetric expansion coefficient of a liquid (β) is defined as the fractional change in the volume of the liquid per degree Celsius (or kelvin) change in temperature.
  • the volumetric expansion coefficient of a liquid (β) is defined as the fractional change in the volume of the gas per degree Celcius (or kelvin) change in temperature at constant pressure. So, β  is the constant pressure volumetric expansion coefficient in case of gas.
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APPEARS IN

 Balbharati Solution for Balbharati Class 8 Science - General Science (2018 to Current)
Chapter 14: Measurement and Effects of Heat
Exercise | Q: 3.5 | Page no. 103
Solution Write Brief Answers. Concept: Expansion of Liquids.
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