Home
Class 12
PHYSICS
Air (density rho) is the being down on s...

Air (density `rho`) is the being down on soap film (surface tension `T`) by pipe of radius `R` with its opening right next to the film. The film is deformed and a bubble detached from the film when the shape of the deformed surface is a hemisphere. Given that the dynamic pressure on the film due to the air blown at speed `v` is `1/2 rho v^(2)` the speed at which the bubble is formed is

A

`sqrt(T/(rhoR))`

B

`sqrt((2T)/(rho R))`

C

`sqrt((4T)/(rho R))`

D

`sqt((8T)/(rhoR)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • KVPY 2021

    KVPY PREVIOUS YEAR|Exercise PART I (Chemistry)|2 Videos

Similar Questions

Explore conceptually related problems

What is surface film?

What is surface film?

How many free surfaces are there in a liquid film ?

A small air bubble of radius r in water is at depth h below the water surface. If P_0 is the atmospheric pressure, rho is the density of water and T is the surface tension of water, what is the pressure inside the bubble?

Dark and colour patterns on thin soap films are due to-

A soap film in formed on a frame of area 4xx10^(-3)m^(2) . If the area of the film in reduced to half, then the change in the potential energy of the film is (surface tension of soap solution =40xx10^(-3)N//m)

If the surface tension of a liquid is 5 N/m then the surface energy of the liquid film on a ring of area 0.15 m^(2) is

KVPY PREVIOUS YEAR-KVPY-All Questions
  1. A smaller cube with side b (depicted by dashed lines) is excised from ...

    Text Solution

    |

  2. A table has a heavy circular top of radius 1m and mass 20 kg, placed o...

    Text Solution

    |

  3. Air (density rho) is the being down on soap film (surface tension T) b...

    Text Solution

    |

  4. For an ideal gas the internal energy is given by U=5PV//2+C, where C i...

    Text Solution

    |

  5. An ideal gas undergoes change in its state from the initial state I to...

    Text Solution

    |

  6. A thermally insulated rigid container of one litre volume contains a d...

    Text Solution

    |

  7. In a Young's double slit experiment the amplitudes of the two waves in...

    Text Solution

    |

  8. Figure below show water flowing through a horizontal pipe from left to...

    Text Solution

    |

  9. A plank is moving in a horizontal direction with a constant accelerati...

    Text Solution

    |

  10. Using the Heisenberg uncertainty principle, arrange the following part...

    Text Solution

    |

  11. The current is flowing along the path abcd of a cube (shown to the lef...

    Text Solution

    |

  12. A thin metallic disc is rotating with constant angular velocity about ...

    Text Solution

    |

  13. One mole of a monatomic gas and one mole of a diatomic gas are initial...

    Text Solution

    |

  14. An ideal gas is made to undergo the cyclic process shown in the figure...

    Text Solution

    |

  15. Two balls of mass M and 2M are thrown horizontally with the same initi...

    Text Solution

    |

  16. Consider a glass cube of dielectric bound by the planes x=0, x=a, u=0,...

    Text Solution

    |

  17. The graph shows the log of activity (log R) of a radioactive material ...

    Text Solution

    |

  18. The magnetic field is uniform for y gt 0 and points into the plane. Th...

    Text Solution

    |

  19. The Hitomi satellite recently observed the Lyman alpha emission line (...

    Text Solution

    |

  20. Assume that the drag force on a football depends only on the density o...

    Text Solution

    |