Home
Class 11
PHYSICS
How many atoms decay in one mean life ti...

How many atoms decay in one mean life time of a radioactive sample-

A

`37%`

B

`63%`

C

`50%`

D

`100%`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION AND FRICTION

    RESONANCE|Exercise Exercise|56 Videos

  • PART TEST 1

    RESONANCE|Exercise Exercise|30 Videos

Similar Questions

Explore conceptually related problems

In a mean life of a radioactive sample

The decay constant lambda of a radioactive sample:

The decay constant of a radioactive sample

Calculate the ratio of half-life to the mean life of a radioactive sample . If lambda be the decay constant of a radioactive sample.

The probaility that a certaun radioactive atom would get disintefrated in a time equal to the mean life fo the radioactive sample is

The half life of a radioactive element A is same as mean life time of another radioactive element B.Initially, both have same number of atoms. B decays faster than A . Why?

The half life period of a radioactive element x is same as the mean life time of another radioactive element y. Initially they have the same number of atoms.Then :

The rate of decay of a radioactive sampel is given by R_(1) at time t_(1) and R_(2) at a later time. t_(2) . The mean life of this radioactive sample is:

Calculate the time taken to decay 100 percent of a radioactive sample in terms of (a) half- life T and (b) mean-life T_(av)

RESONANCE-NUCLEAR PHYSICS-Exercise
  1. The probability of a radioactive atoms to survive 5 times longer than ...

    Text Solution

    |

  2. After emission of an alpha-particle by a radiative element .(84)X^(212...

    Text Solution

    |

  3. The SI unit of activity is-

    Text Solution

    |

  4. The specific activity of radius is nearly-

    Text Solution

    |

  5. After a time equal to four half lives, the amount of radioactive mater...

    Text Solution

    |

  6. The mean of life of a radioactive sample is 100 years. Then after 100 ...

    Text Solution

    |

  7. The count rate of 10 g of radioactive material was measured at differe...

    Text Solution

    |

  8. How many atoms decay in one mean life time of a radioactive sample-

    Text Solution

    |

  9. The half life of radioactive substance is T. Then the fraction of the ...

    Text Solution

    |

  10. The half-life of a radioactive substance is 3h and its activity is 1mu...

    Text Solution

    |

  11. The half -life of cobalt-60 is 5.25 years. How long after a new sample...

    Text Solution

    |

  12. A radioactive element ThA( .(84)Po^(216)) can undergo alpha and beta a...

    Text Solution

    |

  13. A radioactive nuclie decay as follows A overset(alpha)to A(1)overset(b...

    Text Solution

    |

  14. Order of ionization power of alpha, beta and gamma rays is

    Text Solution

    |

  15. In nuclear power station energy of uranium is used for producing-

    Text Solution

    |

  16. The order of magnitude of the density of nuclear matter is=

    Text Solution

    |

  17. The Process by which a heavy nucleus splits into light nuclei is known...

    Text Solution

    |

  18. In equation .(92)U^(235) + .(0)n^1 to .(56)Ba^(144) + .(36)Kr^(89) + X...

    Text Solution

    |

  19. Boron rods are used in nuclear reactor as

    Text Solution

    |

  20. Staements I: .zX^4 undergoes 2 alpha-decays, 2 beta-decays (negative b...

    Text Solution

    |