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Question
A one litre flask contains some mercury. It is found that at different temperatures the volume of air inside the flask remains same. The volume of mercury taken in the flask is :
(Co-efficient of linear expansion of glass is 9×10−6/oC and coefficient of volume expansion of Hg is 1.8×10−4/oC)
A one litre flask contains some mercury. It is found that at different temperatures the volume of air inside the flask remains same. The volume of mercury taken in the flask is :
(Co-efficient of linear expansion of glass is 9×10−6/oC and coefficient of volume expansion of Hg is 1.8×10−4/oC)
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Solution
The correct option is A 150 ml
Volume of air in the flask remains the same, this means that the expansion of the flask is equal to that of mercury
Vgγgt=Vmγmt
or
Vm=Vgγgγm
or
1000(3×9×10−61.8×10−4)=150ml
Volume of air in the flask remains the same, this means that the expansion of the flask is equal to that of mercury
Vgγgt=Vmγmt
or
Vm=Vgγgγm
or
1000(3×9×10−61.8×10−4)=150ml
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