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CGPET 2022 Solved Paper

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Question : 29

Total: 150

The lower end of a capillary tube of radius r is placed vertically in a water of density ρ and surface tension S. The rise of water in the capillary tube is upto height h, then heat evolved is

+‌
π2r2h2ρg
J
+‌
πr2h2ρg
2J
−‌
π2r2h2ρg
2J
−‌
πr2h2ρg
J

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