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  • A liquid is filled in a spherical container of radius R till a height h. At this positions the liquid surface at the edges is also horizontal. The contact angle is <img alt="" src="h

A liquid is filled in a spherical container of radius R till a height h. At this positions the liquid surface at the edges is also horizontal. The contact angle is

 

Option: 1

0


Option: 2

\mathrm{\cos ^{-1}\left(\frac{\mathrm{R}-\mathrm{h}}{\mathrm{R}}\right)}


Option: 3

\mathrm{\cos ^{-1}\left(\frac{h-R}{R}\right)}


Option: 4

\mathrm{\sin ^{-1}\left(\frac{R-h}{R}\right)}


Answers (1)

best_answer

\mathrm{\begin{aligned} &\cos \theta=\frac{\mathrm{R}-\mathrm{h}}{\mathrm{R}}\\ &\theta=\cos ^{-1}\left(\frac{\mathrm{R}-\mathrm{h}}{\mathrm{R}}\right) \end{aligned}}

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Anam Khan

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