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The volume of a liquid flowing out per second of a pipe of length l and radius r is written by a student as `U=(pi Pr^4)/(8ηl)`where P is the pressure difference between the two ends of the pipe and η is coefficient of viscosity of the liquid having dimensional formula ML–1 T–1. Check whether the equation is dimension ally

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The volume of a liquid flowing out per second of a pipe of length l and radius r is written by a student as `U=(pi Pr^4)/(8ηl)`
where P is the pressure difference between the two ends of the pipe and η is coefficient of viscosity of the liquid having dimensional formula ML–1 T–1. Check whether the equation is dimension ally correct.

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