Home
Class 12
PHYSICS
A certain radioactive material can under...

A certain radioactive material can undergo three constant `lambda,2lambda` and `3 lambda`. Then, the effective decay constant `lambda_(eff)` is equal to `n lambda`. What is the value of n?

A

`6`

B

` 4`

C

`2`

D

` 3`

Text Solution

Verified by Experts

The correct Answer is:
A

`(dN_(A))/(dt)=(- lambda N_(A))+(- 2 lambda N_(A)) +(-2 lambdaN_(A))=-6 lambda N_(A)`.
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    CENGAGE PHYSICS|Exercise Linked Comprehension|29 Videos
  • NUCLEAR PHYSICS

    CENGAGE PHYSICS|Exercise Integer|6 Videos
  • NUCLEAR PHYSICS

    CENGAGE PHYSICS|Exercise Subjective|35 Videos
  • Moving charges and magnetism

    CENGAGE PHYSICS|Exercise Question Bank|20 Videos
  • NUCLEI

    CENGAGE PHYSICS|Exercise QUESTION BANK|59 Videos

Similar Questions

Explore conceptually related problems

Which is ture about decay constant (lambda) ?

The decay constant lambda of a radioactive sample:

If the points A(lambda, 2lambda), B(3lambda,3lambda) and C(3,1) are collinear, then lambda=

A radioactive nuclide can decay simultaneously by two different processes which have decay constants lambda_(1) and lambda_(2) . The effective decay constant of the nuclides is lambda .

A radioactive nuclide can decay simultaneously by two different processes which have decay constant lambda_(1) and lambda_(2) . The effective decay constant of the nucleide is lambda

Disintegration constant of a radioactive material is lambda :

Two radioactive material A_(1) and A_(2) have decay constants of 10 lambda_(0) and lambda_(0) . If initially they have same number of nuclei, then after time (1)/(9 lambda_(0)) the ratio of number of their undecayed nuclei will be

Let A be an n xx n matrix. If det (lambda A) = lambda^(s) det(A), what is the value of s?

A radioactive substance "A" having N_(0) active nuclei at t=0 , decays to another radioactive substance "B" with decay constant lambda_(1) . B further decays to a stable substance "C" with decay constant lambda_(2) . (a) Find the number of nuclei of A, B and C time t . (b) What should be the answer of part (a) if lambda_(1) gt gt lambda_(2) and lambda_(1) lt lt lambda_(2)

CENGAGE PHYSICS-NUCLEAR PHYSICS-Single Correct Option
  1. A nucleus moving with velocity bar(v) emits an alpha-particle. Let the...

    Text Solution

    |

  2. Which of the following statements is incorrect for nuclear forces?

    Text Solution

    |

  3. A certain radioactive material can undergo three constant lambda,2lamb...

    Text Solution

    |

  4. In an alpha -decay, the kinetic energy of alpha-particles is 48 MeV a...

    Text Solution

    |

  5. A sample of radioactive material decays simultaneously by two processe...

    Text Solution

    |

  6. In which of the following processes, the number of protons in the nule...

    Text Solution

    |

  7. A radioactiev nuleus X deays to a stable nuleus Y. Then, time graph of...

    Text Solution

    |

  8. A heavy nuleus having mass number 200 gets disintegrated into two smal...

    Text Solution

    |

  9. An element X decays , first by positron emission and then two alpha-pa...

    Text Solution

    |

  10. 90% of a radioactive sample is left undecayed after time t has elapsed...

    Text Solution

    |

  11. A radioactive element X converts into another stable element Y. Half-l...

    Text Solution

    |

  12. A overset(lambda)rarr B overset(2 lambda)rarr C T=0 ,N(0) , 0 , T...

    Text Solution

    |

  13. The binding energy of an electron in the ground state of He atom is ...

    Text Solution

    |

  14. The mean life time of a radionuclide, if the activity decrease by 4% ...

    Text Solution

    |

  15. On an average, a neutron loses half of its energy per collision with a...

    Text Solution

    |

  16. Masses of two isobars .(29)Cu^(64) and .(30)Zn^(64) are 63.9298 u and ...

    Text Solution

    |

  17. If a nucleus such as .^(226)Ra that is initially at rest undergoes al...

    Text Solution

    |

  18. If the Q value of an endothermic reaction is 11.32 MeV, then the minim...

    Text Solution

    |

  19. 1.00 kg of .^(235)U undergoes fission process. If energy released per ...

    Text Solution

    |

  20. Mark out the incoreect statemnet.

    Text Solution

    |