Home
Class 12
CHEMISTRY
The radioactivity of sample is R(1) at a...

The radioactivity of sample is `R_(1)` at a time `T_(1)` and `R_(2)` at a time `T_(2)` . If the half -life of thespeciman is T, the number of atoms that have disintegrated in the time `(T_(2)-T_(1))` is equal to :

A

`(R_(1)T_(1) – R_(2)T_(2))`

B

`(R_(1) – R_(2))`

C

`(R_(1) – R_(2))//T `

D

`(R_(1) – R_(2))T//0.693`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • RADIOACTIVITY

    MOTION|Exercise EXERCISE - 2|15 Videos

  • RADIOACTIVITY

    MOTION|Exercise EXERCISE - 3|23 Videos

  • RADIOACTIVITY

    MOTION|Exercise EXERCISE - 4 LEVEL - II|20 Videos

  • PERIODIC TABLE

    MOTION|Exercise Exercise - 4 | Level-II|22 Videos

  • S-BLOCK

    MOTION|Exercise EXERCISE - 3 Level - II Previous Year | JEE adv|4 Videos

Similar Questions

Explore conceptually related problems

The radioactivity of a sample is R_(1) at a time T_(1) and R_(2) at time T_(2) . If the half-life of the specimen is T, the number of atoms that have disintegrated in the time (T_(2) -T_(1)) is proporational to

The radioactive of a sample is R_(1) at a time T_(1) and R_(2) at a time T_(2) . If the half-life of the specimen is T , the number of atoms that have disintegrated in the time (T_(2)-T_(1)) is equal to (n(R_(1)-R_(2))T)/(ln4) . Here n is some integral number. What is the value of n?

The radioactivity of a sample is R_(1) at a time T_(1) and R_(2) at a time, T_(2) If the half-line of the secimen is T , the number of atoms that have disintergrated in the time (T_(2) - T_(1)) is proportional to:

The radioactivity of a sample is A_1 at time t_1 and A_2 at time t_2 If the mean life of the specimen is T , the number of atoms that have disintegrated in the time interval of (t_2 - t_1) is :

The radioactivity of a sample is l_(1) at a time t_(1) and l_(2) time t_(2) . If the half-life of the sample is tau_(1//2) , then the number of nuclei that have disintegrated in the time t_(2)-t_(1) is proportional to

The activity of a sample of radioactive material A_(1) at time t_(1) and A_(2) at time t_(2)(t_(2)gtt_(1)) . Its mean life is T .

Radioactivity of a sample at T_(1) time is R_(1) and at time T_(2) is R_(2). If half-life of sample is T, then in time (T_(2)-T_(1)), the number of decayed atoms is proportional to

The half-life of a radioactive sample is T . If the activities of the sample at time t_(1) and t_(2) (t_(1) lt t_(2)) and R_(1) and R_(2) respectively, then the number of atoms disintergrated in time t_(2)-t_(1) is proportional to

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:

MOTION-RADIOACTIVITY -EXERCISE - 1
  1. The half life of Tc^(99) is 6.0 hr. The delivery of a sample of Tc^(9...

    Text Solution

    |

  2. How many atoms of 0.1 g-atom of a radioacitve isotope .(Z)X^(A) (half ...

    Text Solution

    |

  3. A radioacive element decays by parallel path as given below: A overs...

    Text Solution

    |

  4. Two radioactive nuclides A and B have half-lives 50 min and 10 min res...

    Text Solution

    |

  5. A radioactive sample had an initial activily of 56 dpm (disintegratio...

    Text Solution

    |

  6. The radioactivity of sample is R(1) at a time T(1) and R(2) at a time ...

    Text Solution

    |

  7. .(13)Al^(27) is a stable isotope. .(13)Al^(29) is expected to disinteg...

    Text Solution

    |

  8. Loss of beta-particles is equivalent to

    Text Solution

    |

  9. Which of the following nuclear reactions will generate an isotope ?

    Text Solution

    |

  10. Which of the following processes represents a gamma- decay only ?

    Text Solution

    |

  11. Select correct statment(s):

    Text Solution

    |

  12. Consider the following nuclear reactions : .(92)^(238)M to (Y)^(X)N+...

    Text Solution

    |

  13. A radioactive element gets spilled over the floor of a room. Its half-...

    Text Solution

    |

  14. The analysis of a uranium reveals that ratio of mole of .^(206)Pband ....

    Text Solution

    |

  15. The ratio of C^(14) to C^(12) in a living matter is measured to be (...

    Text Solution

    |

  16. A solution containing active cobalt 60/27 Co having activity of 0.8 m...

    Text Solution

    |

  17. Wooden article and freshly cut tree show activity 7.6 and 15.2 min""^(...

    Text Solution

    |

  18. C(14) is a beta active nucleus. A sample of C^(14) H(4) gas kept in a ...

    Text Solution

    |

  19. Helium nuclei combines to form an oxygen nucleus. The energy released...

    Text Solution

    |

  20. Let Fpp, Fpn and Fn denote the magnitudes of the net force by a proton...

    Text Solution

    |