Home
Class 12
PHYSICS
The escape velocity on the surface of th...

The escape velocity on the surface of the earth is 11.2 `kms^(-1)`. If mass and radius of a planet is 4 and 2 tims respectively than that of the earth, what is the escape velocity from the planet?

A

11.2 km/s

B

1.112 km/s

C

15.8 km/s

D

22.4 km/s

Text Solution

Verified by Experts

The correct Answer is:
c
`v_(e)=sqrt(2gR)=sqrt((2GM)/(R))=sqrt((2xxGxx4M)/(2R))`
`=sqrt2sqrt((2GM)/(R))=sqrt2=11.2=15.8km//s`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|458 Videos

  • INTERFERENCE AND DIFFRACTION

    NIKITA PUBLICATION|Exercise MULTPLE CHOICE QUESTIONS|333 Videos

Similar Questions

Explore conceptually related problems

Mass and radius of a planet are two times the value of earth. What is the value of escape velocity from the surface of this planet?

The escape velocity for the earth is 11.2 km / sec . The mass of another planet is 100 times that of the earth and its radius is 4 times that of the earth. The escape velocity for this planet will be

Escape velocity on the surface of earth is 11.2 km/s . Escape velocity from a planet whose mass is the same as that of earth and radius 1/4 that of earth is

If the mass of a Planet is eight times the mass of the earth and its radius is twice the radius of the earth, what will be the escape velocity for that planet ?

The escape velocity from the surface of earth is V_(e) . The escape velocity from the surface of a planet whose mass and radius are 3 times those of the earth will be

The escape velocity of a body from earth is about 11.2 km/s. Assuming the mass and radius of the earth to be about 81 and 4 times the mass and radius of the moon, the escape velocity in km/s from the surface of the moon will be:

NIKITA PUBLICATION-GRAVITATION-Multiple Choice Questions
  1. The escape velocity for the earth is 11.2 km / sec . The mass of anoth...

    Text Solution

    |

  2. For a satellite escape velocity is 11 km/s . If the satellite is launc...

    Text Solution

    |

  3. The escape velocity on the surface of the earth is 11.2 kms^(-1). If m...

    Text Solution

    |

  4. Given mass of the moon is 1/81 of the mass of the earth and correspond...

    Text Solution

    |

  5. The energy required for a body of mass 1000 kg to escape from the attr...

    Text Solution

    |

  6. The radius in kilometers, to which the present radius of the earth (R ...

    Text Solution

    |

  7. The weight of a body at the centre of the earth is

    Text Solution

    |

  8. If a body is taken from a deep mine to a point at certain height above...

    Text Solution

    |

  9. A man inside an artificial satellite feels weightlessness because the...

    Text Solution

    |

  10. If the speed of rotation of earth about its axis is increased,

    Text Solution

    |

  11. Weightlessness experienced while orbiting the earth in space-ship, is ...

    Text Solution

    |

  12. If a body is taken to a place where there is no gravity, then

    Text Solution

    |

  13. Weightlessness experienced while orbiting the earth in space-ship, is ...

    Text Solution

    |

  14. Astronauts in a stable orbit around the earth are said to be in a weig...

    Text Solution

    |

  15. An astronaut weighs 70 kg on the earth. If he is inside a satellite re...

    Text Solution

    |

  16. A body is projected up with a velocity equal to 3//4th of the escape v...

    Text Solution

    |

  17. The orbit of a geostationary satellite is

    Text Solution

    |

  18. To have an earth satellite synchronous with the rotation of the earth,...

    Text Solution

    |

  19. A geostationary satellite

    Text Solution

    |

  20. The redius of the earth is R. For a satellite to appear stationary, it...

    Text Solution

    |