#4 | Variation of Pressure with Depth
(Physics) > Mechanical Properties of Fluids
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Related Practice Questions :

The area of cross-section of the wider tube shown in the figure is 800 cm2. If a mass of 12 kg is placed on the massless piston, the difference is heights h in the level of water in the two tubes is :

                                             

1.  10 cm

2.  6 cm

3.  15 cm

4.  2 cm

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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 65 mm from its original level (see diagram). The density of the oil is 

 

(a) 650 kg m-3

(b) 425 kg m-3

(c) 800 kg m-3

(d) 928 kg m-3

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If two liquids of same masses but densities ρ1 and ρ2 respectively are mixed, then density of mixture is given by

(a) ρ=ρ1+ρ22                             (b) ρ=ρ1+ρ22ρ1ρ2

(c) ρ=2ρ1ρ2ρ1+ρ2                             (d) ρ=ρ1ρ2ρ1+ρ2

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With rise in temperature, density of a given body changes according to one of the following relations

(a) ρ=ρ01+γ                         (b) ρ=ρ01-γ 

(c) ρ=ρ0γ                                 (d) ρ=ρ0/γ 

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In making an alloy, a substance of specific gravity s1 and mass m1 is mixed with another substance of specific gravity s2 and mass m2 ; then the specific gravity of the alloy is

1. m1+m2s1+s2                      2. s1s2m1+m2

3. m1+m2m1s1+m2s2                  4. m1s1+m2s2m1+m2

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