Home
Class 9
PHYSICS
A hydrometer floats with half of its ste...

A hydrometer floats with half of its stem outside water surface. It s now placed in alcohol(R.D.=0.8). The hydrometer floats

A

with stem at the saem position

B

with more stem inside the alcohol

C

with more stem oustide alcohol

D

in tilted position

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • FLOATING BODIES

    MODERN PUBLICATION|Exercise EXERCISE|149 Videos

  • FORCE AND LAWS OF MOTION

    MODERN PUBLICATION|Exercise EXAMPLE|123 Videos

Similar Questions

Explore conceptually related problems

When does an object float when placed on the surface of water ?

Why does an object float or sink when placed on the surface of water ?

The earth has a radius of 6400 km . The inner core of 1000km radius is solid. Outside it, there is a region from 1000 km to a radius of 3500 km which is in molten state. Then again from 3500 km to 6400 km the earth is solid.Only longitudinal (P) waves can travel inside a liquid. Assume that the P wave has a speed of 8km s^(-1) in solid parts and of 5 km s^(-1) in liquid parts of the earth. An earthquake occur at some place closer to the surface of the earth.CAlculate the time after which it will be recorded in a seismometer at a diametrically opposite point on the earth if wave travels along diameter?

Why does calcium metal after reacting with water starts floating on its surface? Write the chemical equations for the reaction.

In an experiment to estimate the size of a molecule of oleic acid 1mL of oleic acid is dissolved in 19 mL of alcohol. Then 1 mL of this solution is diluted to 20 mL by adding alcohol. Now 1 drop of this diluted solution is placed on water in a shallow trough. The solution spreads over the surface of water forming one molecule thick layer. Now, lycopodium powder is sprinkled evenly over the film and its diameter is measured. Knowing the volume of the drop and area of the film we can calculate the thickness of the film which will give us the size of oleic acid molecule. Read the passage carefully and answer the following questions : why do we dissolve oleic acid in alcohol ?

In an experiment to estimate the size of a molecule of oleic acid 1mL of oleic acid is dissolved in 19 mL of alcohol. Then 1 mL of this solution is diluted to 20 mL by adding alcohol. Now 1 drop of this diluted solution is placed on water in a shallow trough. The solution spreads over the surface of water forming one molecule thick layer. Now, lycopodium powder is sprinkled evenly over the film and its diameter is measured. Knowing the volume of the drop and area of the film we can calculate the thickness of the film which will give us the size of oleic acid molecule. Read the passage carefully and answer the following questions : How will you calculate the volume of n drops of this solution of oleic acid ?

In an experiment to estimate the size of a molecule of oleic acid 1mL of oleic acid is dissolved in 19 mL of alcohol. Then 1 mL of this solution is diluted to 20 mL by adding alcohol. Now 1 drop of this diluted solution is placed on water in a shallow trough. The solution spreads over the surface of water forming one molecule thick layer. Now, lycopodium powder is sprinkled evenly over the film and its diameter is measured. Knowing the volume of the drop and area of the film we can calculate the thickness of the film which will give us the size of oleic acid molecule. Read the passage carefully and answer the following questions : What would be the volume of oleic acid in each mL of solution prepared?

In an experiment to estimate the size of a molecule of oleic acid 1mL of oleic acid is dissolved in 19 mL of alcohol. Then 1 mL of this solution is diluted to 20 mL by adding alcohol. Now 1 drop of this diluted solution is placed on water in a shallow trough. The solution spreads over the surface of water forming one molecule thick layer. Now, lycopodium powder is sprinkled evenly over the film and its diameter is measured. Knowing the volume of the drop and area fo the film we can calculate the thickness of the film which will give us the size of oleic acid molecule. Read the passage carefully and answer the following questions : What is the role of lycopodium powder?

MODERN PUBLICATION-FLOATING BODIES-EXERCISE
  1. A girl stands on a box having 60 cm length, 40 cm breadth and 20 cm th...

    Text Solution

    |

  2. A body floats 1/3 of its volume outside water and 3/4 of its volue out...

    Text Solution

    |

  3. A hydrometer floats with half of its stem outside water surface. It s ...

    Text Solution

    |

  4. Ice is floating on water in a beaker when ice completely melts then le...

    Text Solution

    |

  5. The volume of a substance is 20 cm^3. The mass of the substance if its...

    Text Solution

    |

  6. Why is it easier to swim in sea water than in rise water?

    Text Solution

    |

  7. A body floats in liquid when

    Text Solution

    |

  8. Which will be easier to lift?

    Text Solution

    |

  9. A piece of cork of mass 4 kg floats in water with 40% of its volume un...

    Text Solution

    |

  10. A body of weight 70 N is floating in a liquid. The buoyont force actin...

    Text Solution

    |

  11. A body weighs 100N in air. It measures 80N when partially immersed in ...

    Text Solution

    |

  12. A 2 cm cubical lock of mass 2 kg is lying on the ground What is the pr...

    Text Solution

    |

  13. Which of the following units is used to measure thrust?

    Text Solution

    |

  14. A block of wood floats in a liquid of density 0.8 g cm^-3 with one fou...

    Text Solution

    |

  15. If equal masses of water and a liquid of relax density 2 are mixed tog...

    Text Solution

    |

  16. What is centre of buoyancy?

    Text Solution

    |

  17. The S.I unit of relative density is

    Text Solution

    |

  18. State the relationship between thrust and pressure.

    Text Solution

    |

  19. List two factors on which buoyant force depends.

    Text Solution

    |

  20. Relative density of gold is 19.3. The density of water is 1000 kg m^-3...

    Text Solution

    |