Home
Class 12
PHYSICS
The mass density of a spherical galaxy v...

The mass density of a spherical galaxy varies as `(K)/(r)` over a large distance 'r' from its centre . In that region , a small star is in a circular orbit of radius R . Then the period of revolution , T depends on R as :

A

`T prop R `

B

`T^(2) prop R `

C

`T^(2) prop (1)/(R^3)`

D

`T^(2) prop R^(3)`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • JEE MAINS

    JEE MAINS PREVIOUS YEAR ENGLISH|Exercise Chemistry|1 Videos

Similar Questions

Explore conceptually related problems

A satellite is orbiting the earth in a circular orbit of radius r . Its

Two satellites of masses M and 16 M are orbiting a planet in a circular orbitl of radius R. Their time periods of revolution will be in the ratio of

Mass density of sphere of radius R is (K)/(r^(2)) . Where K is constant and r is distance from centre. A particle is moving near surface of sphere along circular path of radius R with time period T. Then

Mass density of sphere of radius R is (K)/(r^(2)) . Where K is constant and r is distance from centre. A particle is moving near surface of sphere along circular path of radius R with time period T. Then

The period of revolution of a satellite in an orbit of radius 2R is T. What will be its period of revolution in an orbit of radius 8R ?

Two satellite of mass m and 9 m are orbiting a planet in orbits of radius R . Their periods of revolution will be in the ratio of

The period of a satellite in a circular orbit of radius R is T. What is the period of another satellite in a circular orbit of radius 4 R ?

if the gravitaional force ware to vary inversely as m^(th) power of the distance then the time period of a planet in circular orbit of radius r aroung the sun will be proportional to

In a spherical region the densiy varies inversely with the distance from ther centre Gravitational field at a distance r from the centre is .

Suppose the gravitational force varies inversely as the n^(th) power of distance. Then the time period of a planet in circular orbit of radius R around the sun will be proportional to-

JEE MAINS PREVIOUS YEAR ENGLISH-JEE MAINS 2020-PHYSICS
  1. A plane electromagnetic wave , has frequency of 2.0 xx 10^(10) Hz an...

    Text Solution

    |

  2. A cylindrical vessel containing a liquid is rotated about its axis ...

    Text Solution

    |

  3. The mass density of a spherical galaxy varies as (K)/(r) over a large...

    Text Solution

    |

  4. Shown in the figure is rigid and uniform one meter long rod AB held i...

    Text Solution

    |

  5. Interference fringes are observed on a screen by illuminating two th...

    Text Solution

    |

  6. A spherical mirror is obtained as shown in the figure from a hollow ...

    Text Solution

    |

  7. A gas mixture consists of 3 moles of oxygen and 5 moles of argon at ...

    Text Solution

    |

  8. A particle of mass m with an initial velocity u hati collides perfect...

    Text Solution

    |

  9. A charged particle ( mass m and charge q) moves along X axis with velo...

    Text Solution

    |

  10. An amplitude modulated wave is represented by the expression vm=5...

    Text Solution

    |

  11. A uniform cylinder of mass M and radius R is to be pulled over a step ...

    Text Solution

    |

  12. In reactor 2, kg of ""(92) U^(235) fuel is fully used up in 30 days ....

    Text Solution

    |

  13. Order of resistivity for aluminium, mercury, copper and tungsten is

    Text Solution

    |

  14. A beam of protons moving with a velocity of 4 xx 10^(5) m/s enters a u...

    Text Solution

    |

  15. Train A and train B are running on parallel trackes in the opposite di...

    Text Solution

    |

  16. The least count of the main scale of vernier callipers is 1 mm. Its ve...

    Text Solution

    |

  17. A bead of mass m stays at point P (a,b) on a wire bent in the shape o...

    Text Solution

    |

  18. If speed (V),acceleration (A) and force (F) are considered as fundam...

    Text Solution

    |

  19. Magnetic materials used for making permanent magnets (P) and magnets i...

    Text Solution

    |

  20. When radiation of wavelength lambda is used to illuminate a metallic s...

    Text Solution

    |