Home
Class 11
PHYSICS
The radii of two soap bubbles are r(1) a...

The radii of two soap bubbles are `r_(1) and r_(2) (r_(2) lt r_(1))`. They meet to produce a double bubble. The radius of their common interface is

A

`r_(2)-r_(1)`

B

`(r_(2)-r_(1))/(r_(1)r_(2))`

C

`(r_(1)r_(2))/(r_(2)-r_(1))`

D

`r_(2)+r_(1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Radius of curvature of common surface is,
`R_("Common")=(r_(1)r_(2))/(r_(2)-r_(1))`
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

The radii of two soap bubbles are r_(i) and r_(2) . In isothermal conditions, two meet together in vacuum. Then the radius kof the resultant bubble is given by

Under isothermal condition two soap bubbles of radii r_(1) and r_(2) coalesce to form a single bubble of radius r. The external pressure is p_(0) . Find the surface tension of the soap in terms of the given parameters.

Two soap bubbles of radii 2 cm and 4 cm join to form a double bubble in air, then radius of. curvature of interface is

The excess pressure inside a soap bubble of radius R is (S is the surface tension)

Two soap bubbles A and B have radii r_(1) and r_(2) respectively. If r_(1) lt r_(2) than the excess pressure inside

The radii of two planets are respectively R_(1) and R_(2) and their densities are respectively rho_(1) and rho_(2) .The ratio of the accelerations due to gravity at their surface is

A soap bubble of radius r is placed on another bubble of radius 2r . The radius of the surface common to both the bubbles is

Two soap bubbles are stuck together with an intermediate film separating them. Compute the radius of curvature of this film given that the radii of the bubbles in this arrangement are r_(1) and r_(2) respectively. If r_(1) gt r_(2) state clearly which way the intermediate film will bulge. For the case when r_(1)=r_(2)=2cm calculate he radius of the bubble formed by bursting the intermediate film. The volume of a spherical dome of radius R and height h is pib^(2)(3R-b)//3 .

Consider two concentric spherical metal shells of radii r_(1) and r_(2) (r_(2) gt r_(1)) . If the outer shell has a charge q and the inner one is grounded, then the charge on the inner shell is

Two soap bubble of different radii R_(1) and R_(2) (ltR_(1)) coalesce to form an interface of radius R as shown in figure. The correct value of R is .

DC PANDEY ENGLISH-FLUID MECHANICS-Taking it together
  1. The surface tension of a soap solution is 2xx10^(-2) N//m. To blow a b...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  19. A cylinder of mass M and density d(1) hanging from a string, is lowere...

    Text Solution

    |

  20. Which of the following statements are correct?

    Text Solution

    |