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

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3. A hollow sphere of volume V is floating on water surface with half immersed in it. What should be the minimum volume of water poured inside the sphere so that the sphere now sinks into the water

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4. 1) Oil is transported through a pipeline by a series of pumps that can produce a pressure of in the oil leaving each pump. The losses in the pipeline cause a pressure drop of each kilometer. What is the maximum possible spacing of the pumps?. [Sahil]

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5. Equal masses of water and a liquid of density 2 are mixed together, then the mixture has a density of

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