Home
Class 12
PHYSICS
alpha-particle consists of...

`alpha`-particle consists of

A

2 protons only

B

2 protons and 2 neutrons only

C

2 electrons, 2 protons and 2 neutrons

D

2 electrons and 4 protons only

Text Solution

Verified by Experts

The correct Answer is:
B
Alpha particle is nucleus of `He^(2+)`, hence it contains 2 neutrons and 2 protons.
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    MODERN PUBLICATION|Exercise COMPETITION FILE (Objective BB (MCQs))|14 Videos

  • ATOMS

    MODERN PUBLICATION|Exercise COMPETITION FILE (Objective C (MCQs))|10 Videos

  • ATOMS

    MODERN PUBLICATION|Exercise COMPETITION FILE (Objective A(MCQs) )|16 Videos

  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|16 Videos

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise Chapter Practice Test|15 Videos

Similar Questions

Explore conceptually related problems

Alpha particle is

In a given electric field , the beta particle are deflected more than the alpha -particle in spin of the alpha - particle having a langer charge

alpha -particles carries

A fusion reaction consists of combining four protons into an alpha -particle the mass of alpha - particle is 4.00260u and that of proton is 1.007825u

The velocity of alpha -particles is of the order of

Charge on an alpha -particle is

MODERN PUBLICATION-ATOMS -COMPETITION FILE ( Objective B (MCQs))
  1. The ratio of kinetic energy to the total energy of an electron in a Bo...

    Text Solution

    |

  2. What is the radius of 2^(nd) Bohr orbit, given the radius of the first...

    Text Solution

    |

  3. If the ionization energy for the hydrogen atom is 13.6 eV , the energy...

    Text Solution

    |

  4. In a Rutherford scattering experiment when a projectile of change Z(1)...

    Text Solution

    |

  5. The total energy of an electron in an atom in an orbit is -3.4eV. Its...

    Text Solution

    |

  6. We wish to see inside an atom. Assuming the atom to have a diameter of...

    Text Solution

    |

  7. alpha-particle consists of

    Text Solution

    |

  8. Energy levels A,B and C of a certain atom correspond to increasing val...

    Text Solution

    |

  9. Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in th...

    Text Solution

    |

  10. Every series of hydrogen spectrum has an upper and lower limit in wave...

    Text Solution

    |

  11. The ionization enegry of the electron in the hydrogen atom in its grou...

    Text Solution

    |

  12. The wavelength of the first line of Lyman series for hydrogen atom is ...

    Text Solution

    |

  13. Electron in hydrogen atom first jumps from third excited state to seco...

    Text Solution

    |

  14. An electrons of a stationary hydrogen atom passes form the fifth energ...

    Text Solution

    |

  15. Ratio of longest wavelengths corresponding to Lyman and Balmer series ...

    Text Solution

    |

  16. Hydrogen atom in ground state is excited by a monochromatic radiation ...

    Text Solution

    |

  17. Consider 3rd orbit of He^(+) (Helium) using nonrelativistic approach t...

    Text Solution

    |

  18. Given the value of Rydberg constant is 10^(7)m^(-1), the waves number ...

    Text Solution

    |

  19. When an alpha-particle of mass 'm' moving with velocity 'v' bombards o...

    Text Solution

    |

  20. The ratio of wavelength of the lest line of Balmer series and the last...

    Text Solution

    |