Two soap bubbles of radii $r_{1}$ and $r_{2}$ equal to $4 cm$ and $5 cm$ are touching each other over a common surface $S_{1} S_{2}$ (shown in figure). Its radius will be

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Important Questions on Fluid Mechanics

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 13 - Fluid Mechanics>Objective Problems>Q 109

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}^{- 1}

g = 1000 cm s^{- 2}

)

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 13 - Fluid Mechanics>Objective Problems>Q 110

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

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 13 - Fluid Mechanics>Objective Problems>Q 111

Which graph represents the variation of surface tension with temperature over small temperature ranges for water?

EASY

JEE Main

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 1>Chapter 13 - Fluid Mechanics>Objective Problems>Q 112

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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