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Water is in streamline flows along a hor...

Water is in streamline flows along a horizontal pipe with non-uniform cross-section. At a point in the pipe where the area of cross-section is `10 cm^(-2)`, the velocity of water is `1 ms^(-1)` and the pressure is 2000 Pa.
The pressure at another point where the cross-sectional area is `5 cm^(2)` is

A

200Pa

B

400Pa

C

500Pa

D

800Pa

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