question_answer

The limbs of a manometer consist two uniform capillary tubes of radii \[7.2\times {{10}^{-}}^{4}\] and \[14\times {{10}^{-\,4}}m\]. Find out the correct pressure difference (in Pa) if the level of the liquid in narrower tube stands 0.2 m above that in the broader tube. (Density of liquid: \[1{{0}^{3}}kg/{{m}^{3}}\], Surface tension: \[72 \times  1{{0}^{-3}}N/m\])

Answer:

(1863)