5. The cross-section areas of the limbs of U-tube are 0.4 cm2 and 0.5 cm2
. The U-tube was half filled with
mercury of relative density 13.6. A liquid was poured in to the larger limb to make the mercury column
in the smaller limb to rise by 3 cm. If the volume of the liquid poured is 5 cm3
, what is the relative
density of this liquid?
(1) 5.5 (2) 6.2 (3) 7.3
(4) 8.5 (5) 9.2