Home
Class 12
PHYSICS
(A) Hydrogen atom consists of only one e...

(A) Hydrogen atom consists of only one electron but its emission spectrum has many lines.
(R) Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found.

A

Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.

B

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

C

'A' is true and 'R' is false

D

'A' is false and 'R' is true

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    AAKASH SERIES|Exercise EXERCISE -II|35 Videos
  • ATOMS

    AAKASH SERIES|Exercise EXERCISE -III|25 Videos
  • ATOMS

    AAKASH SERIES|Exercise EXERCISE -IA|51 Videos
  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise LAW OF MOTION|91 Videos
  • CAPACITORS

    AAKASH SERIES|Exercise PRACTICE SHEET (ADVANCED) (Integer Type Questions)|2 Videos
AAKASH SERIES-ATOMS-EXERCISE -IB
  1. (A) According to classical theory, the proposed path of an electron in...

    Text Solution

    |

  2. (A) The electron in the hydrogen atom passes from energy level n = 4 t...

    Text Solution

    |

  3. (A) Hydrogen atom consists of only one electron but its emission spect...

    Text Solution

    |

  4. (A) For the scattering of a.-particles at a large angles. only the nuc...

    Text Solution

    |

  5. (A) Between any two given energy levels, the number of absorption tran...

    Text Solution

    |

  6. (A) Atoms of each element are stable and emit characteristic spectrum ...

    Text Solution

    |

  7. (A) Most of the mass of the atom is concen- trated in its nucleus (R...

    Text Solution

    |

  8. (A) Bohr's third postulate states that the stationary orbits are these...

    Text Solution

    |

  9. (A) The total energy of an electron revolving in any stationary orbit ...

    Text Solution

    |

  10. (A) In tho experiment of alpha particle scattering, extremely thin gol...

    Text Solution

    |

  11. (A) In alpha particle scattering number of alpha particles undergoing ...

    Text Solution

    |

  12. (A) Electrons in the atom are held due to coulomb forces (R) : The a...

    Text Solution

    |

  13. (A) According to electromagnetic theory an accelerated particle contin...

    Text Solution

    |

  14. (A) A laser beam of 0.2W can drill holes through a metal sheet whereas...

    Text Solution

    |

  15. (A) LASER is used to measure distant object as moon. (R) Lasers are ...

    Text Solution

    |

  16. (A) In He-Ne laser, population inversion takes place between energy le...

    Text Solution

    |

  17. (A) Crystalline solids can cause X-rays to diffract. (R) lnteratomic...

    Text Solution

    |

  18. (A) In a metal all the free electrons have same energy. (R) : Electr...

    Text Solution

    |

  19. (A) X-ray astronomy is possible only from satellites orbiting the eart...

    Text Solution

    |

  20. (A) : Bohr's atomic model cannot be used to explain multiple electron ...

    Text Solution

    |