Home
Class 11
PHYSICS
A water drop of radius 10^-2 m is broken...

A water drop of radius `10^-2` m is brokenn into 1000 equal droplets. Calculate the gain in surface energy. Surface tension of water ils `0.075Nm^-1`

A

`16.96xx10^(-4) J`

B

`8.48 xx 10^(-4) J`

C

`4.24 xx 10^(-4) J`

D

`2.12 xx 10^(-4) J`

Text Solution

Verified by Experts

The correct Answer is:
B
Gain in surface energy
`E=4piR^(2)(n^(1/3)-1)T`
`=4 xx 3.14 xx (10^(-2))(1000)^(1//3)-1 xx 0.075`
`=8.48 xx 10^(-4)` J
Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    DC PANDEY|Exercise Match the columns|6 Videos

  • EXPERIMENTS

    DC PANDEY|Exercise Subjective|15 Videos

  • GENERAL PHYSICS

    DC PANDEY|Exercise INTEGER_TYPE|2 Videos

Similar Questions

Explore conceptually related problems

A mecury drop of radius 1 cm is sprayed into 10^(5) droplets of equal size. Calculate the increase in surface energy if surface tension of mercury is 35xx10^(-3)N//m .

A drop of radius r is broken into n equal drips. Calulate the work done if surface tension of water is T.

Twenty seven droplets of water, each of radius 0.1 mm coalesce into a single drop. Find the change in surface energy. Surface tension of water is 0.072 N/m.

A water drop of radius 1 cm is broken into 1000 equal droplets. If the surface tension of water is 0.075 N/m , then the gain in surface enrgy will be

A drop of mercury of radius 2 mm is split into 8 identical droplets. Find the increase in surface energy. Surface tension of mercury =0.465Jm^-2

A liquid drop of diameter 4 mm breaks into 1000 droplets of equal size. Calculate the resultant change in surface energy, the surface tension of the liquid is 0.07 Nm^(-1)

A water drop of diameter 2 mm is split up into 10^(9) identical water drops. Calculate the work done in this process. (the surface tension of water is 7.3xx10^(-2)Nm^(-1))

A mercury drop of radius 1.0 cm is sprayed into 10^(8) droplets of equal size. Calculate the energy expanded. (Surface tension of mercury = 32 xx 10^(-2) N//m ).

A mercury drop of radius R is sprayed into n droplets of equal size. Calculate the energy expanded if surface tension of mercury is T .

A mercury drop of radius 1 cm is sprayed into 10^(6) dropletes of equal size. Calculates the energy expanded if surface tension of mercury is 35 xx 10^(-3) N//m .

DC PANDEY-FLUID MECHANICS-Medical entranes gallery
  1. The approximate depth of an ocean is 2700m. The compressibility of wat...

    Text Solution

    |

  2. Determine the height above the dashed line XX' attained by the water s...

    Text Solution

    |

  3. A water drop of radius 10^-2 m is brokenn into 1000 equal droplets. Ca...

    Text Solution

    |

  4. The lower end of a capillary tube is dipped into water and it is seen ...

    Text Solution

    |

  5. A soap bubble of diameter a is produced using the soap solution of sur...

    Text Solution

    |

  6. A boat floating in a water tank is carrying a number of large stones. ...

    Text Solution

    |

  7. Choose the correct statement.

    Text Solution

    |

  8. A 20 cm long capillary tube is dipped vertically in water and the liqu...

    Text Solution

    |

  9. By sucking a straw a student can reduce the pressure in his lungs to 7...

    Text Solution

    |

  10. What is ratio of surface energy of 1 small drop and 1 large drop, if 1...

    Text Solution

    |

  11. A solid floats such that its 1//3 part is above the water surface. The...

    Text Solution

    |

  12. The amount of work done in blowing a soap bubble such that its diamete...

    Text Solution

    |

  13. When the temperature increased the angle of contact of a liquid

    Text Solution

    |

  14. A bubble is at the bottom of the lake of depth h. As the bubble comes ...

    Text Solution

    |

  15. A wooden block is floating on water kept in a beaker. 40% of the block...

    Text Solution

    |

  16. A small metal sphere of radius a is falling with a velocity upsilon th...

    Text Solution

    |

  17. A flow of liquid is streamline, if the Reynolds' number is

    Text Solution

    |

  18. A certain number of spherical drops of a liquid of radius r coalesce t...

    Text Solution

    |

  19. A drop of some liquid of volume 0.04 cm^(3) is placed on the surface o...

    Text Solution

    |

  20. Under isothermal condition, energy E is supplied to a soap bubble of s...

    Text Solution

    |