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Two soap bubbles of radii and equal to and are touching each other over a common surface (shown in figure). Its radius will be


(a)
(b)
(c)
(d)
(e)

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Important Questions on Fluid Mechanics
EASY
JEE Main
IMPORTANT
A vessel, whose bottom has round holes with diameter of , is filled with water. The maximum height to which the water can be filled without leakage is (surface tension of water, , )

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 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 is pricked

EASY
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, in a capillary tube. If the radius of the capillary tube is made 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
