A manometer is made of a tube of uniform bore of 0.5cm^2 cross -sectional area, with one limb vertical and the other limb inclined at 30° to the horizontal. Both of its limbs are open to atmosphere and initially , it is partly filled with a manometer liquid of specific gravity 1.25. If then an additional volume of 0.75 cm^3 of water is poured in the inclined , what is the rise of the meniscus in the vertical tube ?
a. 4 cm
b. 7.5 cm
c. 12 cm
d. 15 cm
5 сен 2021
