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  • A liquid is contained in a vertical tube of semicircular cross-section as shown in figure. The contact angle is zero. The force of surface tension on the straight part and force of surface tension

A liquid is contained in a vertical tube of semicircular cross-section as shown in figure. The contact angle is zero. The force of surface tension on the straight part and force of surface tension on the curved part are in ratio

Option: 1

1 : 1


Option: 2

2 : \pi


Option: 3

1 : 2


Option: 4

\pi : 2


Answers (1)

best_answer

Answer (2)

\\F_{flat}=T \times2R\\ F_{curved}=\pi \times2R\\ \\ \frac{F_{flat}}{F_{curved}}=\frac{T \times2R}{\pi \times2R}\\ \\ =2:\pi

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vishal kumar

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