Home
Class 12
PHYSICS
Escape velocity of a body from the surfa...

Escape velocity of a body from the surface of earth is 11.2km/sec. from the earth surface. If the mass of earth becomes double of its present mass and radius becomes half of its present radius then escape velocity will become

A

`44.8 km//s`

B

`22.4 km//s`

C

`11.2 km//s` (remain unchanged)

D

`5.6 km//s`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Electrostatics|76 Videos

  • HEAT AND THERMODYNAMICS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise PHYSICS|117 Videos

Similar Questions

Explore conceptually related problems

The escape velocity of a body from the surface of earth is

The escape velocity of a body from the surface of the earth is equal to

The escape velocity from the surface of the earth is (where R_(E) is the radius of the earth )

The escape velocity of a body from the surface of the earth is V_(1) and from an altitude equal to twice the radius of the earth, is, V_(2) . Then

The escape velocity of a body from the surface of the earth is 11.2 km/s. If a satellite were to orbit close to the surface, what would be its critical velocity ?

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

The escape velocity from the surface of the earth of radius R and density rho

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-GRAVITATION-Gravitation
  1. A body of mass m is placed on the earth surface is taken to a height o...

    Text Solution

    |

  2. A body attains a height equal to the radius of the earth when projecte...

    Text Solution

    |

  3. The mass of a planet is six times that of the earth. The radius of the...

    Text Solution

    |

  4. The escape velocity of a sphere of mass m is given by (G= univesal gra...

    Text Solution

    |

  5. A rubber ball is dropped from a height of 5m on a plane, where the acc...

    Text Solution

    |

  6. The time of revolution of planet A round the sun is 8 times that of an...

    Text Solution

    |

  7. Escape velocity of a body from the surface of earth is 11.2km/sec. fro...

    Text Solution

    |

  8. A ball is dropped from a spacecraft revolving around the earth at a he...

    Text Solution

    |

  9. What will be the formula of the mass in terms of g, R and G ? (R = rad...

    Text Solution

    |

  10. The escape velocity from the surface of the earth is V(e). The escape ...

    Text Solution

    |

  11. A satellite A of mass m is at a distance of r from the centre of the e...

    Text Solution

    |

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

    Text Solution

    |

  13. The mean radius of earth is R, its angular speed on its own axis is w ...

    Text Solution

    |

  14. A satellite moves around the earth in a circular orbit with speed v. I...

    Text Solution

    |

  15. A seconds pendulum is mounted in a rocket. Its period of oscillation d...

    Text Solution

    |

  16. A planet is moving in an elliptic orbit. If T,V,E and L stand, respect...

    Text Solution

    |

  17. The gravitational force between two objects is proportional to 1//R (a...

    Text Solution

    |

  18. For a satellite, escape speed is 11 km s^(-1). If the satellite is lau...

    Text Solution

    |

  19. The distance of the two planets from the Sun are 10^(13)m and 10^(12) ...

    Text Solution

    |

  20. The largest and the shortest distance of the earth from the sun are r(...

    Text Solution

    |