JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

Two narrow bores of diameter $3.0 \mathrm{~mm}$ and $6.0 \mathrm{~mm}$ are joined together to form a U-tube open at both ends. If the U-tube contains water, what is the difference in its levels in the two limbs of the tube? Surface tension of water at the temperature of the experiment is $7.3 \times 10^{-2} \mathrm{~N} / \mathrm{m}$. Take the angle of contact to be zero and density of water to be $1.0 \times 10^3 \mathrm{~kg} / \mathrm{m}^3$. (take, $g=9.8 \mathrm{~m} / \mathrm{s}^2$).