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The density of liquid A is 1.6 g cm-3 and its height h(A) = 16.9 cm, then the density of oil B of height h(B) = 30 cm in the U-tube is about(a) 0.90 g/cm3(b) 1.12 g/cm3(c) 2.24 g/cm3(d) 3.54 g/cm3 |
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Answer» The correct choice is (a) 0.90 g/cm3 To elaborate: Pressure at point ‘b’ = Atmospheric pressure + ρB ghB Pressure at point ‘a’ = Atmospheric pressure + ρAghA Pressures at point ‘a’ = point ‘b’. |
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