EASY
JEE Main
IMPORTANT
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Two soap bubbles of radii r1 and r2 equal to 4 cm and 5 cm are touching each other over a common surface S1S2 (shown in figure). Its radius will be

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Important Questions on Fluid Mechanics

EASY
JEE Main
IMPORTANT
A vessel, whose bottom has round holes with diameter of 0.1 mm, is filled with water. The maximum height to which the water can be filled without leakage is (surface tension of water, T=75 dyne cm-1g=1000 cm s-2)
EASY
JEE Main
IMPORTANT
A soap bubble is blown with the help of a mechanical pump at the mouth of a tube. The pump produces a constant increase per minute in the radius of the bubble, irrespective of its internal pressure. The graph between the excess pressure inside, the soap bubble and time t will be
EASY
JEE Main
IMPORTANT
Which graph represents the variation of surface tension with temperature over small temperature ranges for water?
EASY
JEE Main
IMPORTANT

A thread is tied slightly loose to a wire frame as in figure and the frame is dipped into a soap solution and taken out. The frame is completely covered with the film. When A is pricked 

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JEE Main
IMPORTANT
The liquid in the capillary tube will rise, if the angle of contact is
EASY
JEE Main
IMPORTANT
If a capillary tube is dipped into liquid and the levels of the liquid inside and outside are same, then the angle of contact is
EASY
JEE Main
IMPORTANT
Water rises to a height of, 30 mm in a capillary tube. If the radius of the capillary tube is made 34th of it's previous value. The height to which the water will rise in the tube is
EASY
JEE Main
IMPORTANT
When two capillary tubes of different diameters are dipped vertically, then rise of the liquid is