Home
Class 11
PHYSICS
The surface tension of a soap solution i...

The surface tension of a soap solution is `2xx10^(-2) N//m`. To blow a bubble of radius 1cm, the work done is

A

`4 pi xx10^(-6) J`

B

`8pi xx10^(-6) J`

C

`12 pi xx10^(-6) J`

D

`16 pi xx10^(-6) J`

Text Solution

Verified by Experts

The correct Answer is:
D
Work done, `W=8pi R^(2)T`
`=8xxpi xx(10^(-2))^(2)xx2xx10^(-2)=16 pi xx10^(-6)` J
Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    DC PANDEY ENGLISH|Exercise B) Medical entrance special format question|19 Videos

  • FLUID MECHANICS

    DC PANDEY ENGLISH|Exercise Match the columns|6 Videos

  • FLUID MECHANICS

    DC PANDEY ENGLISH|Exercise Check point 13.4|10 Videos

  • EXPERIMENTS

    DC PANDEY ENGLISH|Exercise Subjective|15 Videos

  • GENERAL PHYSICS

    DC PANDEY ENGLISH|Exercise INTEGER_TYPE|2 Videos

Similar Questions

Explore conceptually related problems

surface tension of soap solution is 4*10^(-2) N/m . If a soap bubble of radius 5 cm is blown, then the amount of work done is

The surface tension of a soap solution is 30 xx 10^(-3) N m^(-1) . How much work is done to increase the radius of a soap bubble from 2 cm to 3 cm?

The surface tension of a soap solution is 30 xx 10^(-3) N m^(-1) . How much work is done to increase the radius of a soap bubble from 1.5 cm to 3 cm?

The surface tension of soap solution is 0.03 N//m . The work done in blowing to from a soap bublle of surface area 40 cm^(2) , (in J) , is

The surface of soap solution is 25xx10^-3Nm^-1 . The excess pressure inside a soap bubble of diameter 1 cm is

The radius of a soap bubble is r. the surface tension of soap solution is T, keeping temperature constant, the radius of the soap bubble is doubled the energy necessary for this will be-

What is the excess pressure inside a bubble of soap solution of radius 5.00mm, given that the surface tension of soap solution at the temperature (20^(@)C) is 2.50xx10^(-2)Nm^(-1) ? If an air bubble of the same dimension were formed at a depth of 40.0 cm inside a container containing the soap solution (of relative density 1.20), what would be the pressure inside the bubble? (1atm. is 1.01 xx 10^(5)Pa ).

If work W is done in blowing a bubble of radius R from a soap solution. Then the work done is blowing a bubble of radius 2R from the same solution is

The surface tension of soap solution at a temperature 20^(@) C is 2.5xx10^(-2) N m^(-1) .The excess pressure inside a bubble of soap solution of radius 6mm is

A narrow capillary tube is dipped 10 cm below water surface and a liquid bubble of radius 2 mm formed at the lower end by blowing air through the tube. a. Calculate the excess pressure due to surface tension. b. What is the pressure required in the tube in order to blow a hemispherical bubble at its end in water? The surface tension of water at temperature of the experiment is 7.30xx10^(-2) N//m . 1 atmospheric pressure = 10^(5) Pa , density of water = 1000 kg//m^(3)

DC PANDEY ENGLISH-FLUID MECHANICS-Taking it together
  1. The surface tension of liuid at its boiling point

    Text Solution

    |

  2. Angle of contact of a liquid with a solid depends on

    Text Solution

    |

  3. The surface tension of a soap solution is 2xx10^(-2) N//m. To blow a b...

    Text Solution

    |

  4. A liquid is coming out from a vertical tube. The relation between the ...

    Text Solution

    |

  5. The radii of two soap bubbles are r(1) and r(2) (r(2) lt r(1)). They m...

    Text Solution

    |

  6. The excess pressure due to surface tension in a spherical liquid drop ...

    Text Solution

    |

  7. If two soap bubbles of different radii are connected by a tube

    Text Solution

    |

  8. Assuming that the atmosphere has the same density anywhere as at sea l...

    Text Solution

    |

  9. If the angle of contact is less than 90^(@) the pressure just inside t...

    Text Solution

    |

  10. The value of escape speed from the surface of earth is

    Text Solution

    |

  11. If two glass plates are quite nearer to each other in water, then ther...

    Text Solution

    |

  12. A tall cyclinder is filled with viscous oil. A round pebble is dropped...

    Text Solution

    |

  13. A tank if filled with water upto height H. When a hole is made at a di...

    Text Solution

    |

  14. A tank is filled to a height H. The range of water coming out of a hol...

    Text Solution

    |

  15. The density of ice x cm^(-3) and that of water is y gcm^(-3). What is ...

    Text Solution

    |

  16. Two capillary tubes P and Q are dipped in water. The height of water l...

    Text Solution

    |

  17. In a surface tension experiment with a capillary tube water rises upto...

    Text Solution

    |

  18. Two parallel glass plates are dipped partly in the liquid of density '...

    Text Solution

    |

  19. A balloon has volume of 1000 m^(3). It is filled with hydrogen (rho=0....

    Text Solution

    |

  20. A raft of mass M=600 kg floats in calm water with 7 cm submerged. When...

    Text Solution

    |