1.

A beaker of radius \( 10 cm \) is filled with water. Calculate the force of surface tension on any diametrical line on its surface. Surface Tension of water is \( 0.075 N / m \).

Answer»

Surface tension

\(T = \frac Fl\)

\(F = T.l\)

\(= 0.075 \times 2r\)

\(= 0.075 \times 2 \times 0.10\)

\(F = 0.015 \,m N\)



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