Home
Class 12
PHYSICS
A overset(lambda)rarr B overset(2 lambda...

`A overset(lambda)rarr B overset(2 lambda)rarr C`
`T=0 ,N_(0) , 0 `,
` T N_(1) N_(2) N_(3)`
The ratio of `N_(1)" to "N_(2) ` is maximum I s

A

at no time this is possible

B

``2

C

`1//2`

D

`(ln2)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
b

`(dN_(2))/(dt)=lambda N_(1) -2 lambda N_(2)`
For `n_(2)` to be maximum,
`(dN_(2))/(dt)=0`
`rArr lambda N_(1)= 2 lambda N_(2)` or `(N_(1))/(N_(2)) =2`.
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

A overset(lambda_(1)) rarr B overset (lambda_(2))rarr C t=0 N_(0) 0 0 t N_(1) N_(2) N_(3) In the above radioactive decay C is stable nucleus. Then:

N_(2)O_(3) overset(R.T.) to NO+NO_(2)

Arrange the wavelengths ( lambda ) of the following emission lines of H-atom in an increasing order. (1) n=3 overset(lambda_1)rarr n=1 (2) n=5 overset(lambda_2)rarr n=3 (3) n=12 overset(lambda_3)rarr n=10 (4) n=22 overset(lambda_4)rarr n=20

Li+N_(2) overset(Delta)rarrA overset(H_(2)O)rarr B+(C ) gas Then the correctly matched pair for A,B,C are :

lim_ (n rarr oo) int_ (0) ^ (2) (1+ (t) / (n + 1)) ^ (n) d

{:(BaC_(2) + N_(2) overset(Delta)rarr (A)),(CaC_(2) + N_(2) overset(Delta)rarr (B)):} (A) and (B) are

For the reaction 2H_(2) + 2NO rarr N_(2) + 2H_(2)O , the following mechanism has been suggested : 2NO ? N_(2)O_(2) equilibrium constant K_(1) (fast) N_(2)O_(2) +H_(2) overset(k_(2)) rarr N_(2)O +H_(2)O (slow) N_(2) O +H_(2) overset(k_(3)) rarr N_(2)+H_(2)O (fast) Establish the rate law for given reaction.

(2) lim_(n rarr0) (n!sin x)/(n)

CENGAGE PHYSICS-NUCLEAR PHYSICS-Single Correct Option
  1. 90% of a radioactive sample is left undecayed after time t has elapsed...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  10. 1.00 kg of .^(235)U undergoes fission process. If energy released per ...

    Text Solution

    |

  11. Mark out the incoreect statemnet.

    Text Solution

    |

  12. U-235 can decay by many ways , let us here consider only two ways, A a...

    Text Solution

    |

  13. .(19)^(49)K isotope of potassium has a half-life of 1.4 xx10^(9) yr an...

    Text Solution

    |

  14. What is the probability of a radioactive nucleus to survive one mean l...

    Text Solution

    |

  15. Consider one of fission reactions of ^(235)U by thermal neutrons .(92)...

    Text Solution

    |

  16. A star initially has 10^40 deuterons. It produces energy via the proce...

    Text Solution

    |

  17. Two radioactive X(1) and X(2) have decay constants 10 lambda and lamb...

    Text Solution

    |

  18. A radioactive substance is being consumed at a constant of 1 s^(-1). A...

    Text Solution

    |

  19. A radioactive isotope is being produced at a constant rate X. Half-lif...

    Text Solution

    |

  20. A radioactive substance X decays into another radioactive substance Y....

    Text Solution

    |