#1 | Introduction of Pressure
(Physics) > Mechanical Properties of Fluids
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The approximate depth of an ocean is 2700 m. The compressibility of water is 45.4 x 10-11 Pa-1 and density of water is 103kg/m3. What fractional compression of water will be obtained at the bottom of the ocean?

(a)0.8x10-2

(b)1.0x10-2

(c)1.2x10-2

(d)1.4x10-2

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If pressure at half the depth of a lake is equal to 2/3 pressure at the bottom of the lake then what is the depth of the lake

(a) 10 m                           (b) 20 m
(c) 60 m                           (d) 30 m

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An inverted bell lying at the bottom of a lake 47.6 m deep has 50 cm3 of air trapped in it. The bell is brought to the surface of the lake. The volume of the trapped air will be (atmospheric pressure = 70 cm of Hg and density of Hg = 13.6 g/cm3
(a) 350 cm3                               (b) 300 cm3
(c) 250 cm3                               (d) 22 cm3

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A siphon in use is demonstrated in the following figure. The density of the liquid flowing in siphon is 1.5 gm/cc. The pressure difference between the point P and S will be

(a)                                  (b)

(c) Zero                                        (d) Infinity