Home
Class 12
PHYSICS
The half life of .^(131)I is 8day. Given...

The half life of `.^(131)I` is 8day. Given a sample of `.^(131)1` at `t = 0`, we can assert that:

A

No nucleus will decay before t=4 days

B

No nucleus will decay t=8 days

C

All nuclei will decay before t=16 days

D

A given nucleus may decay at any time after t=0

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THE NUCLEUS

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (More than One Correct Choice Type)|22 Videos

  • THE NUCLEUS

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Linked Comprehension)|12 Videos

  • THE NUCLEUS

    RESNICK AND HALLIDAY|Exercise PROBLEMS|66 Videos

  • THE KINETIC THEORY OF GASES

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS|72 Videos

  • UNITS AND MEASUREMENT

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (MATRIX-MATCH)|11 Videos

Similar Questions

Explore conceptually related problems

The half life of I""^(131) is 8 day. Given a sample of I""^(131) at t=0, we can assert that

The half - liofe of ^(131) 1 is days Given a sample of ^(131) 1 at time t = 0 , we get that

The nuclide .^131 I is radioactive, with a half-life of 8.04 days. At noon on January 1 , the activity of a certain sample is 60089 . The activity at noon on January 24 will be

The half-life of radon is 3.8 days. Three forth of a radon sample decay in.

The half-life of iodine-131 is 8.02 days. How long will it take for 80% of the sample to decay?

The half-life of a radioactive sample is 6.93 days. After how many days will only 1/20 of the sample be left over? [Take log_(e)(20) = 3.0 ]

A nucleus of Ux_1 has a half life of 24.1 days. How long a sample of Ux_1 will take to change to 90% of Ux_1 .

Xenon-127 has a half life of 36.4 days. How much of a sample of xenon that orginally weighed 1.0g remains after 20 days?

RESNICK AND HALLIDAY-THE NUCLEUS-PRACTICE QUESTIONS (Single Correct Choice Type)
  1. Let T be the mean life of a radioactive sample. 75% of the active nucl...

    Text Solution

    |

  2. A freshly prepared radioactive source of half-life 2 h emits radiation...

    Text Solution

    |

  3. The half life of .^(131)I is 8day. Given a sample of .^(131)1 at t = 0...

    Text Solution

    |

  4. A radioactive sample consists of two distinct species having equal num...

    Text Solution

    |

  5. Half-lives of two radioactive elements A and B are 20 minutes and 40 m...

    Text Solution

    |

  6. The ratio of molecular mass of two radioactive substances is 3//2 and ...

    Text Solution

    |

  7. An unstable nucleus decays in three different modes, each mode having ...

    Text Solution

    |

  8. The decay constant of a radioactive material represents the fraction o...

    Text Solution

    |

  9. Samples of two different isotopes, X and Y. Both contain the same numb...

    Text Solution

    |

  10. A particle isotope has a half life of 10 min.What does that statement ...

    Text Solution

    |

  11. A radioactive substance is dissolved in a liquid and the solution is h...

    Text Solution

    |

  12. Nuclear reactions can occur spontaneously when

    Text Solution

    |

  13. A nucleus with mass number 220 initially at rest emits an alpha-partic...

    Text Solution

    |

  14. During a negative beta decay,

    Text Solution

    |

  15. If .(92)U^(238) changes to .(85)At^(210) by a series of alpha-and beta...

    Text Solution

    |

  16. Ten grams of ^57 Co kept in an open container beta-decays with a half-...

    Text Solution

    |

  17. Which one of the following combinations of radioactive decay results i...

    Text Solution

    |

  18. If a beam consisiting of alpha,beta and gamma radiation is passed thro...

    Text Solution

    |

  19. A gamma- ray photon is emitted

    Text Solution

    |

  20. An archaeologist extracts a sample of carbon from an ancient ax handle...

    Text Solution

    |