Home
Class 11
PHYSICS
The liquids shown in figure in the two a...

The liquids shown in figure in the two arms are mercury (specific gravity =13.6) and water. If the difference of heights of the mercury columns is 2 cm, find the height of the water column.
,

Text Solution

Verified by Experts

Suppose the atmospheric pressure `=P_0`
Pressure at `A=P_0_h(1000kgm^-3)g`.
Pressure `at B=P_0+(0.02m)(13600kgm^-3)g`
These pressures are equal as A and B are at the same horizontal leel. Thus,
`h=(0.02 m) 13.6` ltbr `=0.27m = 27cm`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A cubical metal block of edge 12 cm floats in mercry with one fifth of the height inside the mercury. Water poured till the surface of the block is just immersed in it. Find the height of the water column to be poured. Specific gravity of mercury =13.6.

Water flows through a horizontal tube as shown in figure. If the difference of heights of water colun in the vertical tubes is 2 cm and the area of cross section at A and B are 4cm^2 and 2cm^2 respectively, find the rate of flow of water across any section.

A vertical cylinder of height 100cm contains air at a constant temperature. The top is closed by a friction less light piston. The atmospheric pressure is equal to 75 cm of mercury. Mercury is slowly poured over the piston. Find the maximum height of the mercury column that can be put on the piston.

A metallic sphere of radius 4.2 cm is melted and recast into the shape of a cylinder of radius 6cm. Find the height of the cylinder.

Water flows through a tube shown in figure. The areas of cross section at A and B are 1cm^2 and 0.5 cm^2 respectively. The height difference between A and B is 5cm. If the speed of water at A is 10 cms^-1 . Find a. the speed at B and b. the difference in pressures at A and B.

A barometer tube contains a mixture of air and saturated water vopour in the space above the mercury column. It reads 70cm when the actual atmospheric pressure is 76cm of mercury. The saturation vapour pressure at roon tempature is1.0 cm of mercury, The tube is now lowered in the reservoir till the space above the mercury cloumn is reduced to half its origina volume. Find the reading of the barometer. Assume that the temperature remains constant.

An overhead water tanker is in the shape of a cylinder has capacity of 61.6 cu.mts. The diameter of the tank is 5.6 m. Find the height of the tank.

HC VERMA-FLUID MECHANICS-All Questions
  1. A beaker of circular cross-section of radius 4 cm is filled with mercu...

    Text Solution

    |

  2. The atmospheric pressure on the surface of the earth is about

    Text Solution

    |

  3. The liquids shown in figure in the two arms are mercury (specific grav...

    Text Solution

    |

  4. A cylindrical vessel containing a liquid is closed by a smooth piston...

    Text Solution

    |

  5. The area of cross section of the two arms of a hydraulilc press are 1 ...

    Text Solution

    |

  6. A copper piece of mass 10 g is suspended by a vertical spring. The spr...

    Text Solution

    |

  7. A cubical block of wood of edge 3 cm floats in water. The lower surfac...

    Text Solution

    |

  8. The wooden plank of length 1 m and uniform cross section is hinged at ...

    Text Solution

    |

  9. A cylindrical block of wood of mass M is floating in water with its ax...

    Text Solution

    |

  10. Water flows in a horizontal tube as shown in figure. The pressure of w...

    Text Solution

    |

  11. The area of cross section of a large tank is 0.5m^2. It has an opening...

    Text Solution

    |

  12. Is it always true that the molecules of a dense liquid are heavier tha...

    Text Solution

    |

  13. If someone presses a pointed needle against your skin, your are hurt. ...

    Text Solution

    |

  14. In the derivation of P1-P2=rhogz it was asumed that the liquid is inco...

    Text Solution

    |

  15. Suppose the density of air at Madras is rho0 and atmosphere pressure i...

    Text Solution

    |

  16. The surface tension of liquid decreases with a rise in:

    Text Solution

    |

  17. A barometer tube reads 76 cm of mercury. If the tube is gradually incl...

    Text Solution

    |

  18. A one meter long glas tube is open at both ends. One end of the tube i...

    Text Solution

    |

  19. A satellite revolves round the earth. Air pressure inside the satellit...

    Text Solution

    |

  20. Consider the barometer shown in figure. If a small hole is made at a p...

    Text Solution

    |