Home
Class 12
PHYSICS
In one average-life,...

In one average-life,

A

half the active nuclei decay

B

less than half the active nuclei decay

C

more than half the active nuclei decay

D

all the nuclei decay

Text Solution

Verified by Experts

The correct Answer is:
C

`bar(T) = 1.44T_(1//2)`
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS AND RADIO ACTIVITY

    CP SINGH|Exercise EXERCISES|118 Videos
  • NEET PREVIOUS YEAR

    CP SINGH|Exercise PAPER|89 Videos
  • OPTICAL INSTRUMENTS

    CP SINGH|Exercise EXERCISES|63 Videos

Similar Questions

Explore conceptually related problems

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

Put the correct symbols in the following statements : I. The average life span of a crow ........ then the average life span of a parrot . II. The average life span of a rose plant ...... then the average life span of a rice plant. III. The average life span of a caw .... than the average life span of a crocodile. IV.The average life span of a banyan tree ..... then the average life span of a banana tree.

A. Life expectancy is based on average life span. R. It is the age at which half the population still survives.

A: Every sixth person in the world is an Indian. R: Life expectancy depends upon average life span.

What percentage of decay takes place in the average life of a substance ?

If the average life of a person is taken as 100 s the age of the universe on this scale is of the order

Indium -112 is radioactive and has a very short half-life ( t_(1//2)=14 min). Its decay constant and average life are repectively:

A certain element has half life period of 30 days. Find its average life

CP SINGH-NUCLEAR PHYSICS AND RADIO ACTIVITY-EXERCISES
  1. In a sample of radioactive material, what percentage of the initial nu...

    Text Solution

    |

  2. The half life of Radon is 3.8 days. Calculate how much of 15 milligram...

    Text Solution

    |

  3. The half - life of ^(215) At is 100 mu , s.The time taken for the radi...

    Text Solution

    |

  4. In one average-life,

    Text Solution

    |

  5. The activity of a sample of radioactive material A(1) at time t(1) and...

    Text Solution

    |

  6. 90% of the active nuclei present in a radioactive sample are found to ...

    Text Solution

    |

  7. Two radioactive substances A and B have half lives of T and 2T respect...

    Text Solution

    |

  8. Two radioactive substances A and B have half lives of T and 2T respect...

    Text Solution

    |

  9. Two radioactive substance X and Y initially contain equal number of nu...

    Text Solution

    |

  10. A radioactive isotope X with a half-life of 1.37 xx 109 years decays t...

    Text Solution

    |

  11. The count rate from 100cm^(3) of a radioactive liquid is c. Some of th...

    Text Solution

    |

  12. Half-lives of two radioactive substances A and B are respectively 20 m...

    Text Solution

    |

  13. The decay constant of radio isotope is lambda. If A(1) and A(2) are it...

    Text Solution

    |

  14. A radioactive sample has half-life of 5 years. Probability of decay in...

    Text Solution

    |

  15. The half-life period of a radioactive element x is same as the mean li...

    Text Solution

    |

  16. Two radioactive nuclei P and Q, in a given sample decay into a stable ...

    Text Solution

    |

  17. Two radioactive materials have decay constant 5lambda&lambda. If initi...

    Text Solution

    |

  18. The half life of a radioactive substance is 20 minutes . The approxima...

    Text Solution

    |

  19. A radio isotope X with a half-life 1.4 xx 10^9 years decays of Y which...

    Text Solution

    |

  20. If the binding energy per nucleon in L i^7 and He^4 nuclei are respect...

    Text Solution

    |