Home
Class 12
PHYSICS
A radioactive element has half-life peri...

A radioactive element has half-life period `800 yr`. After `6400 yr`, what amount will remain?

A

`1/2`

B

`1/16`

C

`1/8`

D

`1/256`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • NEET 2024

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTION|50 Videos

  • OPTICS AND OPTICAL INSTRUMENTS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|87 Videos

Similar Questions

Explore conceptually related problems

A radioactive element has a half life of one day. After three days the amount of the element left will be :

A radioactive element has half-life period of 30 days. How much of it will be left after 90 days?

A radioactive element has half life period of 30 days. How much of it will be left after 90 days?

Initial amount of the radioactive element with half life 10 days is 16 g. What amount in gm of this element will remain after 40 days?

A certain radioactive element has a half-life of 20 years . If we have a block with 10 g of the element in it, after how

The half-life period of a radioactive element is 1 h. After 3 h, what fraction of it will remain?

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NUCLEAR PHYSICS-Exercise
  1. Energy released in the fission of a single ""92 U^235 nucleus is 200 M...

    Text Solution

    |

  2. The binding energy per nucleon is maximum in the case of.

    Text Solution

    |

  3. In the given reaction ""z X^A rarr ""(z+1)Y^A rarr ""(z-1) K^(A - 4)...

    Text Solution

    |

  4. The mass density of a nucleus varies with mass number A as

    Text Solution

    |

  5. The energy equivalent of one atomic mass unit is

    Text Solution

    |

  6. Solar energy is mainly caused due to

    Text Solution

    |

  7. If the nuclear force between two protons, two neutrons and between pro...

    Text Solution

    |

  8. In the nucleus of ""(11)Na^(23), the number of protons, neutrons and e...

    Text Solution

    |

  9. The half-life period of radium is 1600 years. The fraction of a sample...

    Text Solution

    |

  10. The constituents of atomic nuclei are believed to be

    Text Solution

    |

  11. ""6^12 C absorbs an energenic neutron and emits beta particles. The re...

    Text Solution

    |

  12. The ratio of the radii of the nuclei ""(13)^(27)Al " and " ""(52)Te^(1...

    Text Solution

    |

  13. Which of the following statements is true for nuclear forces?

    Text Solution

    |

  14. The nuclei ""(6)C^(13) & ""(7)N^(14) can be described as

    Text Solution

    |

  15. Average binding energy per nucleon over a wide range is

    Text Solution

    |

  16. An element A decays into element C by a two-step process : A rarr B ...

    Text Solution

    |

  17. A radioactive element has half-life period 800 yr. After 6400 yr, what...

    Text Solution

    |

  18. The nucleus ""48^115 Cd after two successive beta^- decays will give.

    Text Solution

    |

  19. A radioactive sample with a half-life of 1 month has the label : 'Acti...

    Text Solution

    |

  20. What is the radius of iodine atom (at no. 53, mass number 126)?

    Text Solution

    |