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Grade: 10
        Why there is no apparent expansion of gases . But liquids have ?
8 months ago

Answers : (1)

Arun
13827 Points
							
When we heat
a liquid there is expansion both in the liquid and the vessel too. But the
expansion of the vessel is much smaller than the liquid. When we take the
expansion of vessel into account
Observed expansion
of liquid(or real expansion)= Apparent expansion of the liquid + Expansion of
the vessel

The
coefficient of apparent expansion of a liquid(ga)
is the ratio of observed increase in volume for a unit rise of temperature to
the original volume of the liquid.

The
coefficient of real expansion of the liquid(gr)
is defined as the ratio of actual increase in volume of a liquid for a unit
rise in temperature to the original volume of the liquid.

If gg is the
expansion of the vessel, then
gr (real
expansion)= ga
(apparent expansion) + gg(cubical
expansion of vessel)
 
8 months ago
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