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

Correct Answer is : +πr2h2ρg2J

+\frac{\pi^2 r^2 h^2 \rho g}{J}

+\frac{\pi r^2 h^2 \rho g}{2 J}

-\frac{\pi^2 r^2 h^2 \rho g}{2 J}

CGPET 2022 Solved Paper

Section: Physics

Question : 29 of 150

Marks: +1, -0

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

Validate

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