Home
Class 12
PHYSICS
The half life of radium is 1600 year...

The half life of radium is 1600 years . In how much time will its `(15)/( 16)` fraction disintegrate ?

A

6400 years

B

3200 years

C

1600 year

D

8000 year

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • RADIOACTIVITY & NUCLEAR PHYSICS

    MOTION|Exercise Exercise-2|24 Videos

  • RADIOACTIVITY & NUCLEAR PHYSICS

    MOTION|Exercise Exercise-3|81 Videos

  • RADIOACTIVITY & NUCLEAR PHYSICS

    MOTION|Exercise Questions For Practice|12 Videos

  • PROJECTILE MOTION

    MOTION|Exercise EXERCISE-3 (SECTION-B)|8 Videos

  • RAY OPTICS

    MOTION|Exercise Exercise-4|38 Videos
MOTION-RADIOACTIVITY & NUCLEAR PHYSICS-Exercise -1
  1. The radioactive sources A and B of half lives of 2hr and 4hr respectiv...

    Text Solution

    |

  2. The half life of polonium is 140 days. In what time will 15 g of polon...

    Text Solution

    |

  3. The half life of radium is 1600 years . In how much time will ...

    Text Solution

    |

  4. Calculate the half life period of a radioactive substance if its activ...

    Text Solution

    |

  5. When 64 gms of a radioactive element are carried from Jaipure t...

    Text Solution

    |

  6. A radioactive element with mass 8 gm and haslf life 100 second ...

    Text Solution

    |

  7. The activity of a radioactive elements (decay constant lambda) ...

    Text Solution

    |

  8. A fraction f(1) of a radioactive sample decays in one mean lie and a f...

    Text Solution

    |

  9. What percentage of the atoms in a sample will remain undecayed...

    Text Solution

    |

  10. In a RA element the fraction of initiated amount remaining after...

    Text Solution

    |

  11. The mean lives of a radioactive material for alpha and beta rad...

    Text Solution

    |

  12. Activity of a radioactive substance is R(1) at time t(1) and R(2) ...

    Text Solution

    |

  13. The activity of a radioactive sample drops fo 1//32 of its initi...

    Text Solution

    |

  14. A radioactive material emits 20 beta - perticles per sec . At 10...

    Text Solution

    |

  15. We get N(1) and N(2) beta- perticles per second from two specimen...

    Text Solution

    |

  16. There are two radio nuceli A and B. A is an alpha emitter and B a beta...

    Text Solution

    |

  17. The number of alpha and beta- emitted during the radioactive decay cha...

    Text Solution

    |

  18. When .90 Th^228 transforms to .83 Bi^212, then the number of the emitt...

    Text Solution

    |

  19. A radioactive nucleus undergoes a series of decay according to the sch...

    Text Solution

    |

  20. The particles not emitted by radioactive susbstace are:

    Text Solution

    |