Home
Class 12
PHYSICS
The earth is assumed to be a sphere of r...

The earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the earth. The escape velocity of a body from this platform is `fv_(e)`, where `v_(e)` is its escape velocity from the surface of the earth. Find the value of `f`.

A

`sqrt(2)`

B

`1/(sqrt(2))`

C

`1/3`

D

`1/2`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION - D (ASSERTION-REASON TYPE QUESTIONS)|16 Videos

  • GRAVITATION

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION - B (OBJECTIVE TYPE QUESTIONS)|26 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION - D|13 Videos

  • KINETIC THEORY

    AAKASH INSTITUTE|Exercise EXERCISE (ASSIGNMENT) SECTION - D Assertion - Reason Type Questions|10 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 earth is assumed to be a sphere of raduis R . A plateform is arranged at a height R from the surface of the fv_(e) , where v_(e) is its escape velocity form the surface of the earth. The value of f is

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

The escape velocity of a body from the earth's surface, v_("esc")= ……….. .

The escape velocity of a rocket launched from the surface of the earth

AAKASH INSTITUTE-GRAVITATION -ASSIGNMENT SECTION - C (PREVIOUS YEARS QUESTIONS)
  1. The figure shows elliptical orbit of a planet m about the sun S. the s...

    Text Solution

    |

  2. Two satellites of earth S(1) and S(2) are moving in the same orbit. Th...

    Text Solution

    |

  3. The earth is assumed to be a sphere of radius R. A platform is arrange...

    Text Solution

    |

  4. imagine a new planet having the same density as that of earth but it i...

    Text Solution

    |

  5. For a satellite moving in an orbit around the earth, ratio of kinetic ...

    Text Solution

    |

  6. The radius of a planet is double that of the earth but then average de...

    Text Solution

    |

  7. A particle of mass ‘m’ is kept at rest at a height 3R from the surface...

    Text Solution

    |

  8. Which of the following graphs shows the variation of acceleration d...

    Text Solution

    |

  9. At what altitude (h) above the earth's surface would the accelratio...

    Text Solution

    |

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

    Text Solution

    |

  11. The distance of two planets from the sun are 10^(13) and 10^(12) m res...

    Text Solution

    |

  12. The radius of earth is about 6400 km and that of Mars is 3200 km ....

    Text Solution

    |

  13. The earth (mass =6xx10^(24)kg) revolves round the sun with an angular ...

    Text Solution

    |

  14. Two particles of equal mass m go around a circle of radius R und...

    Text Solution

    |

  15. The acceleration due to gravity g and density of the earth rho are rel...

    Text Solution

    |

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

    Text Solution

    |

  17. The period of revolution of planet A round from the sun is 8 times tha...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  20. A body of weight 72 N moves from the surface of earth at a height ...

    Text Solution

    |