Home
Class 11
PHYSICS
A body of volume V and desnity rho is in...

A body of volume V and desnity `rho` is initially submerged in a non-viscous liquid of density `sigma (gt rho)`. If it is rises by itself through a height h in the liquid. Its kinetic energy will

A

increase by h V `(sigma-rho)g`

B

increase by hV`(rho+sigma)`g

C

increase by `(hVrhog)/(sigma)`

D

decrease be `(hVrhog)/(sigma)`

Text Solution

Verified by Experts

The correct Answer is:
A
Work done by all the force W=change in kinetic energy two forces are acting, weight and upthrust.
`therefore" "W=(sigma-rho)g(h/V)`
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

An object of w and density rho is submerged in liquid of density sigma , its apparent weight will be

A body of volume V and density rho is kept completely immersed in a liquid of density rho_(L) . If g is the acceleration due to gravity, write expressions for the following (i) the weight of the body. (ii) the upthrust on the body. (iii) the apparent weight of the body in liquid, (iv) the loss in weight of the body.

A block of volume V and density sigma_(b) is placed in liquid of density sigma_(1)(sigma_(1) gt sigma_(b)) , then block is moved upward upto a height h and it is still in liquid. The increase in gravitational energy of the block is :

A drop of liquid of density rho is floating half-immersed in a liquid of density d . If sigma is the surface tension the diameter of the drop of the liquid is

A ball of density rho is dropped from a height on the surface of a non-viscous liquid of density 2rho . Choose the correct options.

An object of mass m is floating in a liquid of density sigma . If the object is made up of density rho , then appare weight of the object in the liquid is

The pressure inside a liquid of density rho at a depth h is :

A small ball of density rho is immersed in a liquid of density sigma(gtrho) to a depth h and released. The height above the surface of water up to which the ball will jump is

A block of volume V and density rho is floating in a liquid of density 2 rho filled in a vessel. Now the vesset starts falling freely with acceleration g . Then the volume of block inside the liquid in the falling condition is

A ball of volume V and density rho_(1) is moved downwards by a distance 'd' in liquid of density rho_(2) . Find total change in potential energy of the system.

DC PANDEY ENGLISH-FLUID MECHANICS-Taking it together
  1. In the given figure, the velocity v(3) will be

    Text Solution

    |

  2. The weight of an object on the surface of the Earth is 40 N. Its weigh...

    Text Solution

    |

  3. A body of volume V and desnity rho is initially submerged in a non-vis...

    Text Solution

    |

  4. The pressure of the gas in a cylindrical chamber is p(0). The vertical...

    Text Solution

    |

  5. Water rises in a capillary tube to a certain height such that the upwa...

    Text Solution

    |

  6. Water rises upto 10 cm height in a long capillary tube. If this tube i...

    Text Solution

    |

  7. If a capillary tube is dipped and the liquid levels inside and outside...

    Text Solution

    |

  8. Water rises to a height of 30 mm in a capillary tube. If the radius of...

    Text Solution

    |

  9. A vessel whose bottom has round holes with a diameter of d=0.1mm is fi...

    Text Solution

    |

  10. There is a hole of radius r at the bottom of a long cylindrical vessel...

    Text Solution

    |

  11. If a water drop is kept between two glass plates, then its shape is

    Text Solution

    |

  12. Two small drops of mercury each of radius r form a single large drop. ...

    Text Solution

    |

  13. A non viscous liquid is flowing through a frictionless duct, cross-sec...

    Text Solution

    |

  14. There is a small hole near the botton of an open tank filled with liqu...

    Text Solution

    |

  15. A container has a small hole at its bottom. Area of cross-section of t...

    Text Solution

    |

  16. Air stream flows horizontally past an aeroplane wing of surface area 4...

    Text Solution

    |

  17. Water from a tap emerges vertically downwards with an initial speed of...

    Text Solution

    |

  18. Figure shows two shells of masses m1 and m2 . The shells are concentr...

    Text Solution

    |

  19. Two drops of same radius are falling through air with steady speed v. ...

    Text Solution

    |

  20. A cubical vessel of height 1 m is full of water. What is the workdone ...

    Text Solution

    |