Home
Class 11
PHYSICS
The earth moves around the Sun in an ell...

The earth moves around the Sun in an elliptical orbit as shown in Fig. The ratio `OA//OB=x`. The ratio of the speed of the earth at `B` to that at `A` is nearly

A

`sqrt(x)`

B

`x`

C

`xsqrt(x)`

D

`x^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
from conservation of angular momentum `mvr=const., v_(1)r_(1)=v_(2)r_(2)`
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

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

  • GRAVITATION

    NARAYNA|Exercise LEVEL III|44 Videos

  • GRAVITATION

    NARAYNA|Exercise C.U.Q|220 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 revolves round the sun in an elliptical orbit. Its speed

When the earth revolves round the sun in an elliptical orbit, its kinetic energy is

A satellite revolves around the earth in an elliptical orbit. Its speed is

Assertion(A) : The earth revolves around the sun an elliptical orbit Reasoning(R) : The sun alwaye attracts the earth with the same force

The earth rotates around the sun (see figure) in an elliptical orbit. At which point will velocity be maximum?

A planet of mass m is moving around the sun in an elliptical orbit of semi-major axis a :

The earth revolves around the sun in an elliptical orbit. It has a speed v_(1) when it is at the minimum distance d_(1) from the sun. When it is at the maximum distance d_(2) from the sun, its speed is

The Earth revolves around the Sun in a nearly circular path, which is commonly called

NARAYNA-GRAVITATION-LEVEL I(C.W.)
  1. The time of revolution of planet A round the sun is 8 times that of an...

    Text Solution

    |

  2. The distance of Neptune and Saturn from the Sun are respectively 10^(1...

    Text Solution

    |

  3. The earth moves around the Sun in an elliptical orbit as shown in Fig....

    Text Solution

    |

  4. The period of moon's rotation around the earth is approx. 29 days. IF ...

    Text Solution

    |

  5. If the mass of earth were 2 times the present mass, the mass of the mo...

    Text Solution

    |

  6. Two sphere of masses m and M are situated in air and the gravitational...

    Text Solution

    |

  7. The gravitational force between two bodies is 6.67xx10^(-7) N when the...

    Text Solution

    |

  8. Two identical spheres each of radius R are placed with their centres a...

    Text Solution

    |

  9. A satellite is orbiting around the earth. If both gravitational force ...

    Text Solution

    |

  10. Mass M=1 unit is divided into two parts X and (1-X). For a given separ...

    Text Solution

    |

  11. If g on the surface of the earth is 9.8 m//s^2, its value at a height ...

    Text Solution

    |

  12. If g on the surface of the earth is 9.8 m//s^2, its value at a depth o...

    Text Solution

    |

  13. If mass of the planet is 10% less than that of the earth and radius of...

    Text Solution

    |

  14. The angular velocity of the earth with which it has to rotate so that ...

    Text Solution

    |

  15. Assume that the acceleration due to gravity on the surface of the moon...

    Text Solution

    |

  16. The value of acceleration due to gravity on the surface of earth is x....

    Text Solution

    |

  17. The point at which the gravitational force acting on any mass is zero ...

    Text Solution

    |

  18. Masses 2kg and 8kg are 18cm apart. The point where the gravitational f...

    Text Solution

    |

  19. Particles of masses m1 and m2 are at a fixed distance apart. If the gr...

    Text Solution

    |

  20. The PE of three objects of masses 1kg,2kg and 3kg placed at the three ...

    Text Solution

    |