Mechanical Properties of Fluids - Result Question 2

2. A U tube with both ends open to the atmosphere, is partially filled with water. Oil, which is immiscible with water, is poured into one side until it stands at a distance of 10mm above the water level on the other side. Meanwhile the water rises by 65mm from its original level (see diagram). The density of the oil is

[2017]

(a) 425kgm3

(b) 800kgm3

(c) 928kgm3

(d) 650kgm3

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Answer:

Correct Answer: 2. (c)

Solution:

  1. (c) Here, hoil ×ρoil ×g=hwater ×ρwater ×g ρ0g×140×103=ρwg×130×103

ρoil =130140×103928kg/m3

[ρw=1kgm3]



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