Home
Class 12
PHYSICS
The fraction of the radioactive sample w...

The fraction of the radioactive sample will remain undecayed after 4 half-life periods is

A

(a) `1/2`

B

(b) `3/4`

C

(c) `15/16`

D

(d) `1/16`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • NUCLEI

    NEW JOYTHI PUBLICATION|Exercise PREVIOUS YEAR QUESTIONS|2 Videos

  • MOVING CHARGES AND MAGNETISM

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|28 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|26 Videos

Similar Questions

Explore conceptually related problems

What is half life period.

Define half life period.

Define half life period.

Tritium has a half-life of 12.5 y undergoing beta decay. What fraction of a sample of pure tritium with remain undecayed after 25 y ?

Which is the radioactive element in group 1 element? What is its half-life period?

The decay constant of a radioactive sample is lambda . The half-life and the average-life of the sample are respectively

Calculate the activity of 1 mg of a radioactive sample whose mass no. is 90 and half life is 28 years.

After 24 hours, only 0.125 g out of the initial quantity of 1g of a radioisotope remains behind. what is half-life period?

NEW JOYTHI PUBLICATION-NUCLEI-COMPETITIVE EXAM CORNER
  1. An electron and an alpha particle have same kinetic energy. How are th...

    Text Solution

    |

  2. A radioactive sample at any instant has its disintegration rate 5000 d...

    Text Solution

    |

  3. If the binding energy per nucleon of deuteron is 1.115 Me V, its mass ...

    Text Solution

    |

  4. A uranium nucleus ""(92)U^(238) emits an alpha particle and a beta - p...

    Text Solution

    |

  5. Heavy water is used in nuclear reactors

    Text Solution

    |

  6. A freshly prepared radioactive sample of half-life 4 hours emits radia...

    Text Solution

    |

  7. A radioactive decay can form as isotope of the original nucleus with t...

    Text Solution

    |

  8. The fraction of the radioactive sample will remain undecayed after 4 h...

    Text Solution

    |

  9. Four atoms of hydrogen combine to form an ""2^4He atom with a release ...

    Text Solution

    |

  10. A radioactive material of half-life time of 69.3 days is kept in a con...

    Text Solution

    |

  11. When alpha particle captures an electron, it becomes a

    Text Solution

    |

  12. The half-life of a radioactive substance is 20 minutes. The time taken...

    Text Solution

    |

  13. The ratio of the surface area of the nuclei ""(52)Te^(125) to that of ...

    Text Solution

    |

  14. On an average, the number of neutrons and the energy of a neutron rele...

    Text Solution

    |

  15. After 300 days, the activity of a radioactive sample is 5000 dps (disi...

    Text Solution

    |

  16. The contral rods used in a nuclear can be made up of

    Text Solution

    |

  17. The fusion reaction in the sun is a multi-step process in which the

    Text Solution

    |

  18. A radioactive sample contains 10^(-3) kg each of two species A and B w...

    Text Solution

    |

  19. The binding energy per nucleon for deuteron (""(1)H^(2)) and helium ("...

    Text Solution

    |

  20. In a series of radioactive decays, if a nucleus of mass number 180 and...

    Text Solution

    |