Home
Class 12
PHYSICS
Distance in free space at which intensit...

Distance in free space at which intensity of 5 eV neutron beam reduces to half will be nearly : (Take half - life of the neutron = 12.8 min)

A

6000 km

B

12000 km

C

18000 km

D

24000 km

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 62

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET SET 65

    NTA MOCK TESTS|Exercise PHYSICS|44 Videos

Similar Questions

Explore conceptually related problems

Over what distance in free space will the intensity of a 5 eV neutron beam reduced by a factor one - half ? [T_(1//2) = 12.8 " min"]

The half-life periof of a substance is 50 min at a certain initial concentration. When the concentration is reduced to one-half of its initial concentration, the half-life periof is found to be 25 min . Calculate the order of reaction.

Assertion (A): For a first order reaction, half-life period is independent of initial concentration of the reacting species.

10 g of a radioactive isotope is reduced to 1.25 g in 12 years. Therefore half-life period of the isotope is

A stream of neutrons is moving with a velocity of 4 xx 10^(3) m/s. What fraction of neutrons will decay before they travel a distance of 20 m. Given half-life of neutrons = 800 seconds and mass of neutron = 0.67 xx 10^(-27) kg.

NTA MOCK TESTS-NTA NEET SET 63-PHYSICS
  1. A brick of mass 2kg begins to slide down on a plane inclined at an ang...

    Text Solution

    |

  2. When the nucleus of .^(238)U(92) disintegrates to give one nuclues of ...

    Text Solution

    |

  3. Distance in free space at which intensity of 5 eV neutron beam reduces...

    Text Solution

    |

  4. A simple pendulum of length l has maximum angular displacement theta ....

    Text Solution

    |

  5. A particle suspended from a vertical spring oscillates 10 times per se...

    Text Solution

    |

  6. A particle of charge -16xx10^(-18) coulomb moving with velocity 10 ms^...

    Text Solution

    |

  7. If the uncertainty in the position of an electron is 10^(-10) m, then ...

    Text Solution

    |

  8. The density of water at the surface of ocean is rho . If the bulk modu...

    Text Solution

    |

  9. A rubber cord of density d, Young's modulus Y and length L is suspende...

    Text Solution

    |

  10. A beam of width t incident at 45^@ on an air-water boundary. The width...

    Text Solution

    |

  11. Light is incident normally on face AB of a prism as shown in Figure. A...

    Text Solution

    |

  12. A particle of mass m moves in the XY plane with a velocity v along the...

    Text Solution

    |

  13. A sphere of mass m and radius r rolls on a horizontal plane without sl...

    Text Solution

    |

  14. If we add impurity to a metal those atoms also deflect electrons . The...

    Text Solution

    |

  15. To detect light of wavelength 500 nm, the photodiode must be fabricate...

    Text Solution

    |

  16. During an experiment an ideal gas is found to obey an additional law V...

    Text Solution

    |

  17. The dimensions of the ratio of magnetic flux (phi) and permeability (m...

    Text Solution

    |

  18. In the phenomenon of diffraction of light, when blue light is used in ...

    Text Solution

    |

  19. The electric and the magnetic field, associated with an e.m. wave prop...

    Text Solution

    |

  20. A wave pulse on a string on a string has the dimension shown in figure...

    Text Solution

    |