Home
Class 11
PHYSICS
The escape velocity from the surface of ...

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 ...........

A

`v_e`

B

`3v_e`

C

`9v_e`

D

`27v_e`

Text Solution

Verified by Experts

The correct Answer is:
A
`impliesv_e = sqrt((2GM)/(R) ):. v_e prop sqrt(M/R)`
If the mass and radius are 3 time those of the earth even the escape velocity remain the same .
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    KUMAR PRAKASHAN|Exercise Section - F Questions from Module|20 Videos

  • GRAVITATION

    KUMAR PRAKASHAN|Exercise QUESTIONS PAPER Section - A|6 Videos

  • GRAVITATION

    KUMAR PRAKASHAN|Exercise Section - D NCERT Exemplar Solutions (Long Answer Type Question )|5 Videos

  • LAW OF MOTION

    KUMAR PRAKASHAN|Exercise (QUESTION PAPER) SECTION-D|1 Videos

Similar Questions

Explore conceptually related problems

What is the escape velocity from a black hole ?

The escape velocity of the surface of earth is 11.2 km/s. What would be the escape velocity of the surface of another planet of the same mass but (1^(th))/4 times the radius of the earth ?

The escape velocity on the surface of earth is 11.2 km/s. What will be its value on a planet having double the radius and eight times the mass of earth?

What is the acceleration due to gravity on the surface of a planet that has twice the mass and radius of the earth?

The ratio of escape velocity at earth (v_(e)) to the escape velocity at a planet (v_(y)) whose radius and density are twice

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 fu, where v is its escape velocity from the surface of the earth the value of f is ..........

What is the value of escape velocity of a body lying on the surface of earth?

What is the value of escape velocity of a body lying on the surface of moon ?

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 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

KUMAR PRAKASHAN-GRAVITATION-Section - E Multiple Choice Questions (MCQs)
  1. If the mass of earth is M, radius R and G is universal gravitational c...

    Text Solution

    |

  2. The density of a planet is rho The orbital period of a satellite revo...

    Text Solution

    |

  3. The escape velocity from the surface of earth is ve . The escape veloc...

    Text Solution

    |

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

    Text Solution

    |

  5. The radius of the earth is 4 times that of the moon and its mass is 80...

    Text Solution

    |

  6. Two spherical bodies of mass M and 5 M and radii R and 2R repectively ...

    Text Solution

    |

  7. Suppose the gravitational force varies inversely  as the nth power of ...

    Text Solution

    |

  8. A satellite of mass m revolves around the earth of radius R at a heigh...

    Text Solution

    |

  9. A particle of mass 10 g is kept of the surface of a uniform sphere of ...

    Text Solution

    |

  10. A planet in a distant solar system is 10 times more massive than the e...

    Text Solution

    |

  11. The height at which the acceleration due to gravity becomes g/9 (wher...

    Text Solution

    |

  12. Four particles, each of mass M and equidistant "from each other, move ...

    Text Solution

    |

  13. From a solid sphere of mass M and radius R/2 aspherical portion of ra...

    Text Solution

    |

  14. Kepler's third law states that square of period of revolution (T) of a...

    Text Solution

    |

  15. A satellite s is moving in an elliptical orbit ,paround the earth. The...

    Text Solution

    |

  16. A remote - sensing satellite of earth revolves in a  circular orbit at...

    Text Solution

    |

  17. Find the weight of the atmosphere around the earth (take the radius of...

    Text Solution

    |

  18. Starting from the centre of the earth having radius R, the variation o...

    Text Solution

    |

  19. These both situation is truely shown in graph (D) A satellite of mass ...

    Text Solution

    |

  20. Imagine Earth to be a solid sphere. If the value of acceleration due t...

    Text Solution

    |