[પ્રવાહીની ઘનતા $\left.\rho_{\text {(liquid) }}=900\; kg\,m ^{-3}, g =10\, ms ^{-2}\right]$ (નજીકના પૂર્ણાંકમાં જવાબ આપો)
\(h =\frac{2 S \cos \theta}{\rho gr }\)
\(S=\frac{\rho grh}{2 \cos \theta}\)
\(=\frac{(900)(10)\left(15 \times 10^{-5}\right)\left(15 \times 10^{-2}\right)}{2}\)
\(S=1012.5 \times 10^{-4}\)
\(S=101.25 \times 10^{-3}=101.25 mN / m\)
In question closest integer is asked
so closest integer \(=101.00\)