24thanks sir....
On heating a liquid of coefficient of cubical expansion γ in a container having coeff of linear exp γ/3 ,then what will happen to level of liquid in container?
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7 Answers
62The change of the side of the contianer will be
l(1+γ/3T)
Change of volutme will be
l3(1+γ/3T)3
=l3(1+γT+....)
for the liquid,
change of volueme will be l3(1+γT)
so the volume of the container will increase mroe than the volume of liquid... so the level of liquid will fall :)
11But, bhaiyyah. In the question it's not given anywhere that the container is a cube [7]
I wouldn't have got the answer even if that were given[3]
62aragorn we dont need a cube..
you are right to have observed that..
I also saw this when i was posting but essentially it will not make any difference..
L3 will get replaced by l.b.h
that is all :)
11What if it were a container with a curved surface.......like a hemisphere or a cylinder? Would the answer be the same? [7]
62if it were an exam question.. my answer would still be yes.. the answer remains the same..
I know it is not convincing but this is what is expected from us at JEE level...
There is not tooo much space for dare devils in the real world ;)