JEE Main & Advanced
Physics
Fluid Mechanics, Surface Tension & Viscosity / द्रव यांत्रिकी, भूतल तनाव और चिपचिपापन
JEE PYQ-Fluid Mechanics, Surface Tension and Viscosity
question_answer
Two tubes of radii \[{{r}_{1}}\] and \[{{r}_{2}},\] and lengths \[{{I}_{1}}\] and \[{{I}_{2}},\] respectively, are connected in series and a liquid flows through each of them in stream line conditions. \[{{P}_{1}}\] and \[{{P}_{2}}\] are pressure differences across the two tubes. If \[{{P}_{2}}\] is \[4{{P}_{1}}\] and \[{{I}_{2}}\] is \[\frac{{{I}_{1}}}{4},\] then the radius \[{{r}_{2}}\] will be equal to - [JEE Online 09-04-2017]