Home
Class 11
PHYSICS
The earth retains its atmosphere, due to...

The earth retains its atmosphere, due to

A

the special shape of the earth

B

the escape velocity being greater than the mean

C

the escape velocity being smaller then the mean speed of the molecules of the atmospheric gases.

D

the sun's gravitational effect.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    NARAYNA|Exercise LEVEL I(C.W.)|51 Videos

  • GRAVITATION

    NARAYNA|Exercise LEVEL II (C.W.)|38 Videos

  • GRAVITATION

    NARAYNA|Exercise EXERCISE -IV|40 Videos

  • FRICTION

    NARAYNA|Exercise Passage type of questions I|6 Videos

  • KINETIC THEORY OF GASES

    NARAYNA|Exercise LEVEL-III(C.W)|52 Videos

Similar Questions

Explore conceptually related problems

The earth binds the atmosphere because of

If the earth loses its atmosphere sudenly, then the duration of day will :-

Assertion : The earth without its atmosphere would be inhospitably cold. All heat would escape in the absence of atmosphere .

Statement I: The earth does not retain hydrogen molecules and helium atoms in its atmosphere, but does retain much heavier molecules, such as oxygen and nitrogen. Statement II: Lighter molecules in the atmosphere have translational speed that is greater or closer to escape speed of earth.

NARAYNA-GRAVITATION-C.U.Q
  1. If a satellite is moved from one stable circular orbit to a farther st...

    Text Solution

    |

  2. If the universal gravitational constant increases uniformly with time,...

    Text Solution

    |

  3. The earth retains its atmosphere, due to

    Text Solution

    |

  4. Ratio of the radius of a planet A to that of planet B is r. The ratio ...

    Text Solution

    |

  5. The ratio of the escape velocity and the orbital velocity is

    Text Solution

    |

  6. The escape velocity from the earth for a rocket is 11.2 km//sec. Ignor...

    Text Solution

    |

  7. The escape velocity for a body projected vertically upwards from the s...

    Text Solution

    |

  8. A missile is launched with a velocity less than the escape velocity. T...

    Text Solution

    |

  9. The escape velocity of a body depeds upon mass as

    Text Solution

    |

  10. The magnitude of potential energy per unit mass of the object at the s...

    Text Solution

    |

  11. A space station is set up in space at a distance equal to the earth's ...

    Text Solution

    |

  12. The minimum number of geo-stationary satellites required to televise a...

    Text Solution

    |

  13. When a satellite going around the earth in a circular orbit of radius ...

    Text Solution

    |

  14. A satellite is orbiting at a certain height in a circular orbit. If th...

    Text Solution

    |

  15. A satellite is revolving round the earth in an elliptical orbit. Its s...

    Text Solution

    |

  16. An artificial satellite of the earth releases a packet. If air resista...

    Text Solution

    |

  17. A satellite is moving in a circular orbit round the earth. If any othe...

    Text Solution

    |

  18. A space-ship entering the earth's atmosphere is likely to catch fire. ...

    Text Solution

    |

  19. An astronaut orbiting the earth in a circular orbit 120km above the su...

    Text Solution

    |

  20. Following physical quantity is constant where a planet that revolves a...

    Text Solution

    |