Home
Class 12
PHYSICS
An asteroid of mass m (m lt lt mE) is ap...

An asteroid of mass `m (m lt lt m_E)` is approaching with a velocity 12 km/s when it is at distance of 10 R from the centre of earth (where R is radius of earth). When it reaches at the surface of Earth, its velocity is (Nearest Integer) in km/s

Text Solution

Verified by Experts

The correct Answer is:
16
NA
Promotional Banner

Topper's Solved these Questions

  • JEE MAIN 2021

    JEE MAINS PREVIOUS YEAR|Exercise PHYSICS SECTION B|30 Videos

Similar Questions

Explore conceptually related problems

An asteroid was fast approaching the earth. Scientists fired a rocket which hit the asteroid at a distance of 5 R from the centre of the earth (R = radius of the earth). mmediately after the hit the asteroid’s velocity (V_(0)) was making an angle of theta=30^(@) with the line joining the centre of the earth to the asteroid. The asteroid just grazed past the surface of the earth. Find V_(0) [Mass of the earth = M]

The escape velocity from the surface of the earth is (where R_(E) is the radius of the earth )

A body at rest starts from a point at a distance r (gtR) from the centre of the Earth. If M and R stand for the speed of the body when it reaches the Earth surface is

A stone is dropped from a height equal to nR , where R is the radius of the earth, from the surface of the earth. The velocity of the stone on reaching the surface of the earth is

An asteroid of mass m is approaching earth, initially at a distance 10R_(E) with speed v_(i) . It hits earth with a speed v_(f) ( R_(E) and M_(E) are radius and mass of earth),. Then

A tunnel is dug across the diameter of earth. A ball is released from the surface of Earth into the tunnel. The velocity of ball when it is at a distance (R )/(2) from centre of earth is (where R = radius of Earth and M = mass of Earth)

A body is projected up with a velocity equal to sqrt((9GM)/(8R)) , where M is the mass of the earth and R is the radius of the earth. The maximum distance it reaches from the centre of the earth is

JEE MAINS PREVIOUS YEAR-JEE MAIN-All Questions
  1. The length of a pendulum is measured as 20.0 cm. The time interval for...

    Text Solution

    |

  2. An electron is moving initially with velocity vo hati+vohatj in unifor...

    Text Solution

    |

  3. An asteroid of mass m (m lt lt mE) is approaching with a velocity 12 k...

    Text Solution

    |

  4. In H–spectrum wavelength of 1^(st) line of Balmer series is lambda= 65...

    Text Solution

    |

  5. There are three containers C1, C2 and C3 filled with same material at ...

    Text Solution

    |

  6. Two batteries (connected in series) of same emf 10 V of internal resis...

    Text Solution

    |

  7. An EMW is travelling along z-axis vecB=5 xx 10^(-8) hatj T, C=3 xx 10^...

    Text Solution

    |

  8. Kinetic energy of the particle is E and it's De-Broglie wavelength is ...

    Text Solution

    |

  9. The dimensional formula of sqrt((hc^5)/G) is

    Text Solution

    |

  10. Two immiscible liquids of refractive index sqrt 2 and 2sqrt2 are fille...

    Text Solution

    |

  11. The identical solid sphere each having mass m and diameter d are touch...

    Text Solution

    |

  12. A solid sphere having radius R and uniform charge density rho has a ca...

    Text Solution

    |

  13. Consider an infinitely long current carrying cylindrical straight wire...

    Text Solution

    |

  14. Find current in the wire BC.

    Text Solution

    |

  15. Two electromagnetic waves are moving in free space whose electric fiel...

    Text Solution

    |

  16. Two ideal di-atomic gases A and B. A is rigid, B has an extra degree o...

    Text Solution

    |

  17. An ideal liquid (water) flowing through a tube of non-uniform cross se...

    Text Solution

    |

  18. A screw gauge advances by 3mm in 6 rotations. There are 50 divisions o...

    Text Solution

    |

  19. A telescope of aperture diameter 5m is used to observe the moon from t...

    Text Solution

    |

  20. A particle of mass m is revolving around a planet in a circular orbit ...

    Text Solution

    |