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Question

A glass flask of volume one litre at 0oC is filled level full of mercury at this temperature. The flask and mercury is now heated to 100oC. How much mercury will spill if coefficient of volume expansion of mercury is 1.82×104/Co and linear expansion of glass is 0.1×104/Co respectively?

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Solution

T=100oC
Coefficient of Volume expansion of Mercury =1.82×104/Co
Coefficient of linear expansion of glass =0.1×104/Co
Now,
Overflow volume of mercury relative to flask is given by
V=Vo(γmγF)T
where, Vo= initial volume of mercury, γm= cubical constant of mercury, γF= cubical constant of Flask
γF=3×α=0.3×104/CoVo=1lSo,V=1(1.82×1040.3×104)100=1.52×102V=0.0152litre

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