A capillary tube of radius 0.1 mm is partly dipped in water (surf… | JEE Main 2025 Physics PYQ

MCQMediumJEE Main 2025 · 7 April, Shift 2Surface Tension & Capillarity

A capillary tube of radius $0.1 \, \text{mm}$ is partly dipped in water (surface tension $70 \, \text{dyn/cm}$ and glass water contact angle $\approx 0^\circ$ ) with $30^\circ$ inclined with vertical. The length of water risen in the capillary is _____ cm. (Take $g = 9.8 \, \text{m/s}^2$ )

A
$\frac{82}{5}$
B
$\frac{57}{2}$
C
$\frac{71}{5}$
D
$\frac{68}{5}$

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