Home
Class 12
PHYSICS
Angular width of central maximum in the ...

Angular width of central maximum in the Fraunhoffer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength `6000Å`. When the slit is illuminated by light of another wavelength, the angular width decreases by `30%`. Calculate the wavelength of this light. The same decrease in the angular width of central maximum is obtained when the original apparatus is immersed in a liquid. Find the refractive index of the liquid.

Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    SL ARORA|Exercise Based on Wave nature of light|12 Videos

  • WAVE OPTICS

    SL ARORA|Exercise Based on Young s Double Slit experiment|22 Videos

  • WAVE OPTICS

    SL ARORA|Exercise EXERCISE|2 Videos

  • UNIVERSE

    SL ARORA|Exercise PROBLEM_TYPE|6 Videos

Similar Questions

Explore conceptually related problems

Angular width of central maxima in the Fraunhofer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength 6000Å . When the slit is illuminated by light of another wavelength, the angular width decreases by 30%. The wavelength of this light will be

Angular width of central maximum in diffraction at a single slit is……………. .

Angular width of central maxima of a single slit diffraction pattern is independent of

Angular width (beta) of central maximum of a diffraction pattern on a single slit does not depend upon

Find the half angular width of the central bright maximum in the fraunhofer diffraction pattern of a slit of width 12xx10^(-5)cm when the slit is illuminated by monochromatic light of wavelength 6000 Å.

Find the half angular width of the central bright maximum in the fraunhofer diffraction pattern of a slit of width 12xx10^(-5)cm when the slit is illuminated by monochromatic light of wavelength 6000 Å.

The slit of width d is illuminated by light of wavelength 5000 Å . If Fresnel distance is 2 m . What is the slit width ?

The angular width of the central maximum of the diffraction patternn in a single slit (of width a) experiment, with lamda as the wavelenth of light, is

In a single slit diffraction pattern the angular width of a central maxima is 30^(@) . When the slit is illuminated by light of wavelength 6000Å . Then width of the slit will be approximately given as :

SL ARORA-WAVE OPTICS-Problems from competitive examination
  1. In a Yong's double-slit experiment, the separration between slits is 2...

    Text Solution

    |

  2. In Young's double-slit experiment the angular width of a fringe formed...

    Text Solution

    |

  3. A double slit arrangement produces interference fringes for sodium lig...

    Text Solution

    |

  4. The interference fringes for sodium light (lambda = 5890 Å) in a doubl...

    Text Solution

    |

  5. A two slit Young's interference is done with monochromatic light of wa...

    Text Solution

    |

  6. A double slit apparatus is immersed in a liquid of refractive index 1....

    Text Solution

    |

  7. In a Young's experimenttje upper slit is covered by a thin glass plate...

    Text Solution

    |

  8. In a Young's interference experimental arrangement, the incident yello...

    Text Solution

    |

  9. In young,s double slit experience monochromatic light, the frings patt...

    Text Solution

    |

  10. Monochromatic light of lamba=5000Å is incident on two slits separately...

    Text Solution

    |

  11. In a modified Young's double slit experiment a monochromatic uniform a...

    Text Solution

    |

  12. In figure S is a monochromatic point source emitting light of waveleng...

    Text Solution

    |

  13. White light is used to illuminate the two slits in a Young's double sl...

    Text Solution

    |

  14. Angular width of central maximum in the Fraunhoffer diffraction patter...

    Text Solution

    |

  15. The limits of the visible spectrum are 4000Å to 7000Å. Show that the v...

    Text Solution

    |

  16. The wavelength of light coming from a distant galaxy is found to be 0....

    Text Solution

    |

  17. An astronaut is approaching the moon. He sends a ratio signal of frequ...

    Text Solution

    |

  18. Two polaroids are placed at 90^(@) to eachother. What happens when (N ...

    Text Solution

    |

  19. Unpolarized light of intensity 32 Wm^(-3) passes through three polariz...

    Text Solution

    |

  20. A beam of plane polarised falls normally on a polariser (cross section...

    Text Solution

    |