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# Form 2 Physics Topical Questions and Answers on Fluid Flow

The figure below shows an incompressible fluid flowing through a pipe.A1 and A2 are cross sectional areas of the pipe in larger section and smaller section of the pipe respectively, while V1 and V2 are speeds of the two sections of the pipe. Derive an expression for the ratio of the speeds (V2)/(V1) in terms of A1 and A2.

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(A1)/(V1) =( A2)/(V2)
V2 =(A1V1)/(A2)