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The ratio of the terminal velocities of two drops of radii and is
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Important Questions on Fluid Mechanics
EASY
JEE Main
IMPORTANT
An air bubble rises from the bottom of a lake of large depth. The rising speed of air bubble will
EASY
JEE Main
IMPORTANT
Units of coefficient of viscosity are
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JEE Main
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The terminal velocity of a small steel ball of radius falling under gravity through a column of viscous liquid of coefficient of viscosity depends on the mass of the ball , acceleration due to gravity , coefficient of viscosity and radius Which of the following relations is dimensionally correct?
MEDIUM
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Two equal drops of water are falling through the air with a steady velocity . If the drops coalesce, then new velocity will be
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As the temperature of water increases, its viscosity
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JEE Main
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The rate of flow of liquid in a tube of radius , length , whose ends are maintained at a pressure difference is , where is coefficient of the viscosity and is
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IMPORTANT
Two capillary tubes of the same length but different radii and are fitted in parallel to the bottom of a vessel. The pressure head is . What should be the radius of a single tube that can replace the two tubes so that the rate of flow is the same as before?
HARD
JEE Main
IMPORTANT
Two capillaries of same length and radii in the ratio are connected in series. A liquid flows through them in streamlined condition. If the pressure across the two extreme ends of the combination is of water, then pressure difference across first capillary is
