Home
Class 12
PHYSICS
The wavelength of sodium D2 line obtaine...

The wavelength of sodium `D_2` line obtained from a sodium vapour lamp is ` 5890Å`. If the wavelength of sodium `D_(2)` line emitted by a star is measured as `5895 Å`, then this implies that

A

the star is revolving round the earh

B

the star is moving away from the earth

C

the star is moving towards the earth

D

the star is stationary

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WAVE THEORY OF LIGHT AND POLARISATION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP -10|15 Videos

  • WAVE MOTION

    MARVEL PUBLICATION|Exercise Test your grasp|15 Videos

Similar Questions

Explore conceptually related problems

The spectrum obtained from a sodium vapour lamp is an example of

The wavelength of a yellow line in spectrum of sodium atom is 5896 A. Express it in nm.

The work function of sodium is 2.3 eV . The threshold wavelength of sodium will be

If the wavelength of light emitted by a sodium vapour lamp is 5893 A then the numebr of photons emitted in 5 hour by a 50 W lamp will be

The wavelength of K_(alpha) –line characteristic X–rays emitted by an element is 0.32Å. The wavelength of K_(beta) –line emitted by the same element will be :–

The wavelength of K_(alpha) X-ray line for an element is 0.42Å . Find the wavelength of K_(beta) line emitted by the same element.

If the wavelength of the firsr line of the Blamer series of hydrogen atom is 6561Å , the wavelength of the second line of the series should be

The wavelength of yellow line of sodium is 5896 Å . Its wave number will be

The wavelength of first line of Balmer series is 6563Å . The wavelength of first line of Lyman series will be

A The wavelength of the K_alpha line ofthe characteristic X rays emitted by an element is 0.64 Å . What is the wavelength of K_beta line emitted by the same element?

MARVEL PUBLICATION-WAVE THEORY OF LIGHT AND POLARISATION -TEST YOUR GRASP -10
  1. The wavelength of sodium D2 line obtained from a sodium vapour lamp is...

    Text Solution

    |

  2. A ray of light incident normally on a glass slab of refractive index 3...

    Text Solution

    |

  3. The wavelength of green light in air is 5400 A.U. Its wavelength in t...

    Text Solution

    |

  4. A light wave in air enters a medium of refractive index (4)/(3). If t...

    Text Solution

    |

  5. A ray of light in incident on a glass plate at an angle of 60^@. What ...

    Text Solution

    |

  6. A ray of light travelling inside a rectangular glass block (mu=sqrt2) ...

    Text Solution

    |

  7. A beam of monochromatic ligh first travels through glass of R.I. 1.5 a...

    Text Solution

    |

  8. A ray of light is incident on the surface of plate of glass of refract...

    Text Solution

    |

  9. What is the angle which the rays of the sun must make with the surfa...

    Text Solution

    |

  10. A beam of light is incident at polarising angle theta on air-glass in...

    Text Solution

    |

  11. When the angle of incidence is 60^(@) on the surface of a glass slab, ...

    Text Solution

    |

  12. A ray of light in air is incident on a glass plate at polarising angle...

    Text Solution

    |

  13. If the polarizing angle of a piece of glass for green light is 54.74^(...

    Text Solution

    |

  14. Herapathite (iodo sulphate of quinine ) is used in the production of

    Text Solution

    |

  15. A rocket is going away from the earth at a speed of 10^(6) m/s . If ...

    Text Solution

    |

  16. A star emitting light of wavelength 6000 Å is moving towards the earth...

    Text Solution

    |