Home
Class 12
PHYSICS
A soap film is formed on a rectangular w...

A soap film is formed on a rectangular wire frame of size `5cm xx 2cm`. If S.T. of soap solution is 30 dyne/cm, the work done is

A

300 ergs

B

600 ergs

C

420 ergs

D

210 ergs

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM AND MATTER

    MBD PUBLICATION|Exercise QUESTION BANK|191 Videos

  • MECHANICAL PROPERTIES OF FLUID(FLUID IN MOTION)

    MBD PUBLICATION|Exercise QUESTION BANK|164 Videos

Similar Questions

Explore conceptually related problems

Calculate the workdone in increasing the radius of soap bubble in air from 1 cm to 2 cm. The surface tension of soap solution is 30 dyne/cm.

Calculate the excess inside a soap bubble of radius 5mm, given surface tension of soap solution 30 dyne/cm.

Find the workdone in blowing soap bubble of radius 7cm. Surface tension of soap solution is 0.035N/m.

MBD PUBLICATION-MECHANICAL PROPERTIES OF FLUID (LIQUID AT REST)-QUESTION BANK
  1. A drops of mercury, 2mm in a diameter is broken up into 1000 droplets,...

    Text Solution

    |

  2. The S.T. of water is 7.2 xx 10^-2 N/m. The work required to break a dr...

    Text Solution

    |

  3. A soap film is formed on a rectangular wire frame of size 5cm xx 2cm. ...

    Text Solution

    |

  4. What will be the work done in blowing a soap bubble of radius 2cm, the...

    Text Solution

    |

  5. Suppose that 64 raindrops combine into a single drops. Calculate the r...

    Text Solution

    |

  6. A film of soap solution is formed in a rectangular wire frame of lengt...

    Text Solution

    |

  7. The surface tension of a liquid is 5 N/m. If a film is held on a ring ...

    Text Solution

    |

  8. A drops of water is placed between two parallel glass plates which are...

    Text Solution

    |

  9. The maximum force, in addition to the weight required to pull a wire f...

    Text Solution

    |

  10. There is a small hole in a hollow sphere. The water enters in it when ...

    Text Solution

    |

  11. A soap bubble of radius 1/sqrtpi cm is expanded to have double the rad...

    Text Solution

    |

  12. The amount of work done to form a spherical soap bubble of radius 0.05...

    Text Solution

    |

  13. A large drop of mercury of radius 1.0 mm splits into 1000 small drople...

    Text Solution

    |

  14. 125 small water droplets, each of radius, 0.1 mm come together to form...

    Text Solution

    |

  15. A boy blows a soap bubble of radius r meter. If S.T. of soap solution ...

    Text Solution

    |

  16. The surface energy of a liquid drop is 20J. It is sprayed into 1000 id...

    Text Solution

    |

  17. A soap bubble has radius r. The surface tension of the soap film is T....

    Text Solution

    |

  18. A glass plate of size 4cm xx 2.5cm is in contact with water with its f...

    Text Solution

    |

  19. A square plate of glass of each side 4cm and thickness of surface tens...

    Text Solution

    |

  20. A big drop of a liquid of radius 2 cm splits into 1000 small droplets....

    Text Solution

    |