Home
Class 12
PHYSICS
If lambda(Cu) is the wavelength of K(alp...

If `lambda_(Cu)` is the wavelength of `K_(alpha)` X-ray line of copper (atomic number `29`) and `lambda_(Mo)` is the wavelength of the `K_(alpha)`X-ray line of molybdenum (atomic number `42`),then the ratio `lambda_(Cu)//lambda_(Mo)` is close to

A

1.99

B

2.14

C

`0.50`

D

0.48

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MODERN PHYSICS -1

    MOTION|Exercise EXERCISE-4(LEVEL-I)|32 Videos

  • MODERN PHYSICS - 2

    MOTION|Exercise EXERCISE - 4 (Level -II) PREVIOUS YEAR - JEE ADVANCED|28 Videos

  • NEWTON'S LAWS OF MOTION & FRICTION

    MOTION|Exercise Exercise - 3 Section-B|12 Videos
MOTION-MODERN PHYSICS -1-EXERCISE-4 ( LEVEL- II)
  1. The key feature of Bohr's spectrum of hydrogen atom is the quantizatio...

    Text Solution

    |

  2. The key feature of Bohr's spectrum of hydrogen atom is the quantizatio...

    Text Solution

    |

  3. The wavelength of the first spectral line in the Balmer series of hydr...

    Text Solution

    |

  4. A silver of radius 1 cm and work function 4.7 eV is suspended from an ...

    Text Solution

    |

  5. A proton is fired from very far away towards a nucleus with charge Q ...

    Text Solution

    |

  6. A pulse of light of duration 100 ps is absorbed completely by a small ...

    Text Solution

    |

  7. The work function of Silver and sodium are 4.6 and 2.3 eV, respective...

    Text Solution

    |

  8. The radius of the orbit of an electron in a Hydrogen-like atom is 4.5 ...

    Text Solution

    |

  9. A metal is illumimated by light of two different wavelength 248nm and ...

    Text Solution

    |

  10. If lambda(Cu) is the wavelength of K(alpha) X-ray line of copper (atom...

    Text Solution

    |

  11. In a historical experiment to determine Planck's constant, a metal sur...

    Text Solution

    |

  12. Highly excited states for hydrogen like atom (alos called Ryburg state...

    Text Solution

    |

  13. A hydrogen atom in its ground state is irradiated by light of waveleng...

    Text Solution

    |

  14. Light of wavelength lambda(ph)falls on a cathode plate inside a vacuum...

    Text Solution

    |

  15. An electron ina hydrogen atom undergoes a transition from an orbit wit...

    Text Solution

    |

  16. A photelectric meterial having work-function phi(0) is illuminated wit...

    Text Solution

    |

  17. In a photoelectric experiment a parallel beam of monochromatic light w...

    Text Solution

    |

  18. Consider a hydrogen-like ionized atom with atomic number with a singl...

    Text Solution

    |

  19. A free hydrogen atom after absorbing a photon of wavelength lambda(a) ...

    Text Solution

    |

  20. Perfectly reflecting mirror of mass M mounted on a spring consitute a ...

    Text Solution

    |