Two vertical glass plates 1 mm apart are dipped into water. How high will be the water rise between the plates, if the surface tension of water is 70 text dyne/cm2 ?

Question

Two vertical glass plates 1 mm apart are dipped into water. How high will be the water rise between the plates, if the surface tension of water is 70 text dyne/cm2 ? (A) 2.86cm (B) 1.43cm (C) 5.72cm (D) 1.63cm

Tardigrade Admin · Accepted Answer

h=(2T cos θ /rρ g)=(2× 70× cos 0° /0.1× 1× 980) =1.43 text cm

Q. Two vertical glass plates 1 mm apart are dipped into water. How high will be the water rise between the plates, if the surface tension of water is $70 d y n e / c m^{2}$ ?

2.86cm

1.43cm

5.72cm

1.63cm

$h = \frac{2 T c o s θ}{r ρ g} = \frac{2 \times 70 \times c o s 0 ^{\circ}}{0.1 \times 1 \times 980}$ $= 1.43 c m$

Q. Two vertical glass plates 1 mm apart are dipped into water. How high will be the water rise between the plates, if the surface tension of water is 70dyne/cm2 ?