Home
Class 12
PHYSICS
Find the half life of U^(238), if one gr...

Find the half life of `U^(238)`, if one gram of it emits `1.24xx10^4` `alpha`-particle per second. Avogadro's Number `=6.023xx10^(23)`.

A

The half life of this nuclide is `4.5xx10^(9)` years

B

The half-life of this nuclide is `9xx10^(9)` years

C

The activity of the prepared smaple is `2.48xx10^(4)` particles/sec

D

The acitivty of the prpared sample is `1.24xx10^(4)` particles/sec

Text Solution

Verified by Experts

The correct Answer is:
A, D
Promotional Banner

Topper's Solved these Questions

  • MODERN PHYSICS

    DC PANDEY|Exercise for JEE Advanced (More than One Options is Correct )|1 Videos
  • MODERN PHYSICS

    DC PANDEY|Exercise Metch the column|6 Videos
  • MODERN PHYSICS

    DC PANDEY|Exercise Integer Type Questions|17 Videos
  • MAGNETISM AND MATTER

    DC PANDEY|Exercise Medical gallery|1 Videos
  • MODERN PHYSICS - 1

    DC PANDEY|Exercise Level 2 Subjective|23 Videos

Similar Questions

Explore conceptually related problems

Calculate the energy released by the fission 1 g of .^(235)U in joule, given that the energy released per fission is 200 MeV . (Avogadro's number =6.023xx10^(23))

Calculate t_(3//2) for Am^(241) in years given that it emits 1.2 xx 10^(11) alpha -particles per gram per second

How many moles of electrons weigh one kilogram? (Mass of electron =9.108xx10^(-31) kg, Avogadro's number =6.023xx10^(23) )

The half-life of radium is 1620 yr and its atomic weight is 226 kg per kilo mol. The number of atoms that will decay from its 1g sample per second will be (take, Avogadro's number, N_(A)=6.023xx10^(23) atom/kilo mol)

The average kinetic energy of one molecule of an ideal gas at 27^@C and 1 atm pressure is [Avogadro number N_A=6.023xx10^(23) ]

Estimate the number of free electrons in 36g of water and the negative charge possessed by them. Given : Avogadro's number = 6.023xx10^(23) and molecular weight of water = 18.

What is the drift velcity of electrons in silver wire of length 1 m having cross-sectional area 3.14xx10^(-6)m^(2) and carrying a current of 10 A . Given atomic mass of silver =108, density of silver =10.5xx10^(3) kg m^(-3) , charge on electron =1.6xx10^(-19) C and Avogadro's number =6.023xx10^(26) per kt-atom.

10^(-3) kg of a radioactive isotope (atomic mass 226) emits 3.72xx10^(10) alpha - particles in a second. Calculate the half-life of the isotope. If 4.2xx10^(2) joule energy is released in one hour in this process what is the average energy of the alpha -particles? Avogadro number is 6.02xx10^(26)// kmol and log_(e)2 =0.693 .

DC PANDEY-MODERN PHYSICS-for JEE Advanced (only one option is Correct)
  1. An electron in hydrogen atom first jumps from second excited state to ...

    Text Solution

    |

  2. The magnitude of energy, the magnitude of linear momentum and orbital ...

    Text Solution

    |

  3. The wavelengths and frequencies of photons in transition 1,2 and 3 for...

    Text Solution

    |

  4. Which of the following transition in He^(+) ion will give rise to a sp...

    Text Solution

    |

  5. Suppose the potential energy between an electron and a proton at a dis...

    Text Solution

    |

  6. Let A(n) be the area enclosed by the n^(th) orbit in a hydrogen atom. ...

    Text Solution

    |

  7. Hydrogen atom absorbs radiations of wavelength lambda0 and consequentl...

    Text Solution

    |

  8. The threshold wavelength for photoelectric emission for a material is ...

    Text Solution

    |

  9. From the following equation pick out the possible nuclear fusion react...

    Text Solution

    |

  10. In the Bohr model of the hydrogen atgom

    Text Solution

    |

  11. The mass number of a nucleus is.

    Text Solution

    |

  12. Photoelectric effect supports quantum nature of light because

    Text Solution

    |

  13. If a nucleus .(Z)^(A)x emits one alpha-particle and one beta (negative...

    Text Solution

    |

  14. Find the half life of U^(238), if one gram of it emits 1.24xx10^4 alp...

    Text Solution

    |

  15. A nitrogen nucleus 7^(N^(14)) absorbs a neutron and can transfrom into...

    Text Solution

    |

  16. Nucleus A decays to B with decay constant lambda(1) and B decays to C ...

    Text Solution

    |

  17. An unstable nucleus X can decay into two stable nuclie Y and Z A sampl...

    Text Solution

    |

  18. An electron , initiallty at rest is released from a large distance fro...

    Text Solution

    |

  19. A nucleus X of mass M. initially at rest undergoes alpha decay accordi...

    Text Solution

    |

  20. Consider an atom made up of a protons and a hypothetical particle of t...

    Text Solution

    |