A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 54

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Find Work done in increasing the size of a soap bubble of radius $3 cm$ to $5 cm$ is nearly (surface tension of soap solution $= 0.03 {Nm}^{- 1}$ ). Surface area is

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Important Questions on Fluid Statics

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 55

if

T

is the surface tension, two mercury drops (each of radius

r

) merge to form a bigger drop. The surface energy of the bigger drop.

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 56

On the surface of the liquid in equilibrium, molecules of the liquid possess

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 57

Find the angle of contact, when a liquid does not wet the sides of solid.

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 58

Two soap bubbles

A

and

B

are kept in a closed chamber where the air is maintained at pressure

8 {Nm}^{- 2}

. The radii of bubble

A

and

B

are

2 cm

and

4 cm

respectively. Surface tension of the soap bubble is

0.04 {Nm}^{- 1}

. Find the ratio

\frac{n_{B}}{n_{A}}

, where

n_{A}

and

n_{B}

are the number of moles of air in bubble

A

and

B

respectively.

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 59

Soap bubbles can be formed floating in air by blowing soap solution in air, but not water bubbles & with the help of a glass tube. It is because

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 60

Force across an imaginary diameter on the surface of the liquid, when a beaker of radius

15 cm

is filled with a liquid of surface tension

0.075 {Nm}^{- 1}

.

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 61

One drop of soap solution of diameter

D

breaks into

27

drops having surface tension

T

. The resultant change in energy is

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 13 - Fluid Statics>EXERCISE>Q 62

Surface tension of a liquid is zero at