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Physics - Fluid Mechanics Questions and Answer >>

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1. A concrete sphere of radius R has a cavity of radius r which is packed with sawdust. The specific gravities of concrete and sawdust are respectively 2.4 and 0.3 for this sphere to float with its entire volume submerged under water. Ratio of mass of concrete to mass of sawdust will be . [AIIMS 1995]


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2. The velocity of kerosene oil in a horizontal pipe is 5 m/s. If g =10 then the velocity head of oil will be


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3. The height of a mercury barometer is 75 cm at sea level and 50 cm at the top of a hill. Ratio of density of mercury to that of air is 104. The height of the hill is


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4. Air is blown through a hole on a closed pipe containing liquid. Then the pressure will . [AFMC 2005]


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5. The pressure at the bottom of a tank containing a liquid does not depend on . [Kerala (Engg.) ]


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