Home
Class 12
PHYSICS
The activity of a sample of a radioactiv...

The activity of a sample of a radioactive meterial is `A_1` , at time `t_1` , and `A_2` at time `t_2(t_2 gt t_1)` . If its mean life T, then

A

`A_1t_1=A_2t_2`

B

`(A_1+A_2)/(t_2-t_1)` = constant

C

`A_2=A_1e^((t_1-t_2)/T)`

D

`A_2=A_1e^(((t_1)/(Tt_2)))`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 45

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos
  • NTA NEET SET 47

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

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 .

The activity of a sample of radioactive material is R_(1) at time t_(1)andR_(2)"at time"t_(2)(t_(2)gtt_(1)) . Its mean life is T. Then,

The activity of a sample of radioactive material is A_1 at time t_(1) and A_(2) at time t_(2)(t_(2) le t_(1)) . Obtain an expression for its mean life.

The activity of a radioactive substance is R_(1) at time t_(1) and R_(2) at time t_(2)(gt t_(1)) . Its decay cosntant is lambda . 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:

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

Activity of a radioactive substance is R_(1) at time t_(1) and R_(2) at time t_(2) (t_(2) gt t_(1)) then the ratio (R_(2))/( R_(1)) is :

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 :

NTA MOCK TESTS-NTA NEET SET 46-PHYSICS
  1. An alpha - particle after passing through a potential difference of V...

    Text Solution

    |

  2. Which of the following series of transitions in the spectrum of hydrog...

    Text Solution

    |

  3. The activity of a sample of a radioactive meterial is A1 , at time t1 ...

    Text Solution

    |

  4. The rediation emitted when an electron jumps from n = 3 to n = 2 orbi...

    Text Solution

    |

  5. When the photons of energy hv fall on a photosensitive metallic surfac...

    Text Solution

    |

  6. Input waveforms A and B as shown in Fig-l are applied to the combinati...

    Text Solution

    |

  7. To get an output 1 from the circuit shown in the figure, the input mus...

    Text Solution

    |

  8. In a transistor, the value of alpha=0.9. Then the value of beta is:

    Text Solution

    |

  9. A common emitter transistor amplifier has a current gain of 50. If the...

    Text Solution

    |

  10. A 90^@ corner is made from a transparent optical material with a refr...

    Text Solution

    |

  11. A crown glass prism of refracting angle 8^(@) is combined with a flint...

    Text Solution

    |

  12. An unpolarised beam of intensity I(0) is incident on a pair of nicols ...

    Text Solution

    |

  13. A slit of width a is illuminated by white light. For red light (lambda...

    Text Solution

    |

  14. A magnet suspended at 30^@ with magnetic meridian makes an angle of 45...

    Text Solution

    |

  15. Equivalent resistance between points A & B in the given circuit is

    Text Solution

    |

  16. In an experiment to measure the internal resistance of a cell by poten...

    Text Solution

    |

  17. The flux linked with a coil at any instant 't' is given by phi = 10t^(...

    Text Solution

    |

  18. An electron moves along the line AB with constant velocity V which lie...

    Text Solution

    |

  19. Eight charges each of value q are placed on a ring of radius R placed ...

    Text Solution

    |

  20. A condenser of capacitance 10 muF has been charged to 100V. It is now ...

    Text Solution

    |