JEE Main 2022 Physics question
A liquid of density 750 flows smoothly through a horizontal pipe that tapers in cross-sectional area from to . The pressure difference between the wide and narrow sections of the pipe is 4500 Pa. The rate of flow of liquid is .
Answer: 24
Solution
By continuity the speed in the narrow section is 2v when it is v in the wide section. By Bernoulli's theorem , so $
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