Home
Class 12
PHYSICS
The half life of polonium is 140 days. I...

The half life of polonium is 140 days. In what time will 15 g of polonium be disintegrated out of its initial mass of 16 g?

Text Solution

Verified by Experts

The correct Answer is:
560 days
Promotional Banner

Topper's Solved these Questions

  • ATOMS, NUCLEI AND MOLECULES

    SL ARORA|Exercise Problem|32 Videos

  • AC CIRCUITS AND ELECTRIC CIRCUITS

    SL ARORA|Exercise problem|57 Videos

  • CAPACITORS

    SL ARORA|Exercise problem for self practive|65 Videos

Similar Questions

Explore conceptually related problems

Half-life of radium is 1,620 years. After how many years 0.75 mg of radium will be disintegrated out of its initial mass of 1 mg.

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

Half-life of radium is 1,620 years. After how many half-lives 0.75 mg of radium will be disintegrated out of its initial m ass of 1 mg?

The half life of a radioactive isotope 25 days . After what time it will disintegrate 75%

The half-life of pononium is 140 days. After how many days. 16 gm polonium will be reduced to 1 gm (or 15 gm will decay) ?

The half life of a radioactive substance is 30 days. What is the time taken to disintegrate to 3//4^(th) of its original mass ?

Half life of radioactive element is 100 yrs. The time in which it disintegrate 50% of its mass will be

Half life of a sample is 20 minutes. In how much time will the acitivity of sample drop to 1//16 of its initial value?

The half-life of a radioactive substance is 48 hours. How much time will it take to disintegrate to its (1)/(16) th parts ?

The half-life of radioactive Polonium (Po) is 138.6 days. For ten lakh Polonium atoms, the number of disintegrations in 24 hours is.

SL ARORA-ATOMS, NUCLEI AND MOLECULES-Problems For Self Practice
  1. The life-life of Bi^210 is 5 days. What time is taken by (7//8)^th par...

    Text Solution

    |

  2. A sample of a radioactive substance has 10^(6) radioactive nuclei. Its...

    Text Solution

    |

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

    Text Solution

    |

  4. 4g of a radioactive material of half life 10 years is kept in a store ...

    Text Solution

    |

  5. One gram of radium is reduced by 2 miligram in 5 yers by alpha-decay....

    Text Solution

    |

  6. A nucleus of Ux(1) has a life of 24.1 days. How long a sample of Ux(2)...

    Text Solution

    |

  7. The half - life of .(92)U^(238) against alpha - decay is 4.5 xx 10^(9)...

    Text Solution

    |

  8. Lanthanum has a stable La^(139) and radioactive isotope La^(138) of ha...

    Text Solution

    |

  9. An accident occurs in a laboratory in which a large amount of a radioa...

    Text Solution

    |

  10. For a given sample, the count rate is 47.5alpha particle per minute. A...

    Text Solution

    |

  11. One milligram of thorium emits 22alpha particles per minute per unit s...

    Text Solution

    |

  12. The half life of .(90)Th^(225) is 8 minutes How many half lives are th...

    Text Solution

    |

  13. A slow neutron strikes a nucleus of .(92)U^(235) splitting it into lig...

    Text Solution

    |

  14. Calculate the Q - value of the reaction .(1)H^(2)+.(1)H^(2) rarr .(...

    Text Solution

    |

  15. Find the Q - value for the nuclear reaction: .(2)He^(4)+.(7)N^(14) r...

    Text Solution

    |

  16. When .(92)U^(235) undergoes fission, 0.1% of the original mass is rele...

    Text Solution

    |

  17. If 200 MeV energy is released per fission of .(92)U^(235) How many fis...

    Text Solution

    |

  18. Assuming that about 200 MeV of energy is released per fission of .(92)...

    Text Solution

    |

  19. When an atom of .(92)U^(235) undergo fission, about 200 MeV energy is ...

    Text Solution

    |

  20. One Mev positron encounters one MeV electron travelling in opposite di...

    Text Solution

    |