Home
Class 12
PHYSICS
A(nonrotating) star collaps onto from an...

A(nonrotating) star collaps onto from an initial radius `R_(i)` with its mass remaining unchanged. Which curve in figure best gives the gravitational acceleration `a_(g)` on the surface of the star as a function of the radius of the star during the collapse?

A

a

B

b

C

c

D

d

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    MOTION|Exercise Exercise - 2 (Level - I) (Objective Problems | Jee Main|13 Videos

  • GRAVITATION

    MOTION|Exercise Exercise - 2 (Level - II) Multiple choice | JEE Advanced|12 Videos

  • GRAVITATION

    MOTION|Exercise Exercise - 4 Section - B Previous Years Problems|15 Videos

  • GEOMETRICAL OPTICS

    MOTION|Exercise Exercise - 4 | Level-II|55 Videos

  • HEAT - 1

    MOTION|Exercise EXERCISE -4 (Level - II) Previous Year | JEE Advanced|22 Videos

Similar Questions

Explore conceptually related problems

A spherical hole of radius R//2 is excavated from the asteroid of mass M as shown in the figure the gravitational acceleration at a point on the surface of the asteroid just above the excavation is

A uniform solid sphere of radius R produces a gravitational acceleration a_g on its surface. At what two distances from the centre of the sphere the acceleration due to gravity is a_g // 4 ?

The kinetic energy needed to project a body of mass m from the earth's surface to infinity is (R is radius of the earth, g is gravitational acceleration on the surface of the earth)

A satellite of mass m revolves around the earth of radius R at a hight x from its surface. If g is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is

Assuming the earth to be a homogencous sphere of radius R. its density in terms of G (constant of gravitation) and g (acceleration due to gravity on the surface of the earth )is

A star of mass M and radius R is made up of gases. The average gravitational pressure compressing the star due to gravitational pull of the gases making up the star depends on R as

Two stars of mass M_(1) & M_(2) are in circular orbits around their centre of mass The star of mass M_(1) has an orbit of radius R_(1) the star of mass M_(2) has an orbit of radius R_(2) (assume that their centre of mass is not acceleration and distance between starts is fixed) (a) Show that the ratio of orbital radii of the two stars equals the reciprocal of the ratio of their masses, that is R_(1)//R_(2) = M_(2)//M_(1) (b) Explain why the two stars have the same orbital period and show that the period T=2pi((R_(1)+R_(2))^(3//2))/(sqrt(G(M_(1)+M_(2)))) .

Assuming the earth to be a homogeneous sphere of radius R , its density in terms of G (constant of gravitation) and g (acceleration due to gravity on the surface of the earth)

MOTION-GRAVITATION-Exercise - 1 (Objective Problems | Jee Main
  1. Statement - I : Assuming zero potential at infinity, gravitational pot...

    Text Solution

    |

  2. A particle of mass M is at a distance a from surface of a thin spheric...

    Text Solution

    |

  3. Work done in taking a body of mass m to a height nR above surface of e...

    Text Solution

    |

  4. If the distance between sun and earth is made 3 times of the present v...

    Text Solution

    |

  5. Two point masses of mass 4m and m respectively separated by d distance...

    Text Solution

    |

  6. If R is the radius of the earth and g the acceleration due to gravity ...

    Text Solution

    |

  7. The height above surface of earth where the value of gravitational acc...

    Text Solution

    |

  8. The decrease in the value of g on going to a height R/2 above the eart...

    Text Solution

    |

  9. At what altitude will the acceleration due to gravity be 25% of that a...

    Text Solution

    |

  10. If the radius of the earth be increased by a factor of 5, by what fact...

    Text Solution

    |

  11. Potential energy of a 3kg body at the surface of a planet is -54 J, th...

    Text Solution

    |

  12. If the kinetic energy of a satellite orbiting around the earth is doub...

    Text Solution

    |

  13. The escape velocity from a planet is v(0). The escape velocity from a ...

    Text Solution

    |

  14. Two planets A and B have the same material density. If the radius of A...

    Text Solution

    |

  15. Select the correct choice(s) :

    Text Solution

    |

  16. A(nonrotating) star collaps onto from an initial radius R(i) with its ...

    Text Solution

    |

  17. A satellite of the earth is revolving in circular orbit with a uniform...

    Text Solution

    |

  18. A satellite revolves in the geostationary orbit but in a direction eas...

    Text Solution

    |

  19. A satellite can be in a geostationary orbit around earth in an orbit o...

    Text Solution

    |

  20. The orbital velocity of an satellite in a circular orbit just above th...

    Text Solution

    |