Test Academy | The lower end of a capillary tube of radius r is placed vertically in water. Then with the rise of water in the capillary, heat evolved is + π² r²h²dg/J, + π r²h²dg/2J, - π r²h²dg/2J,

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The lower end of a capillary tube of radius r is placed vertically in water. Then with the rise of water in the capillary, heat evolved is

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+ π² r²h²dg/J
+ π r²h²dg/2J
- π r²h²dg/2J
- π r²h²dg/J

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