Home
Class 12
PHYSICS
What are optical fibers ? Give three app...

What are optical fibers ? Give three appilications of these fibres.

Text Solution

Verified by Experts

Optical fibre is based upon the phenomenon of total internal reflection. The fibres are made of glass or quartz and coated with a substance having lower refractive index.
Optical fibres are used in transmission and reception of electrical signals by converting them first into light signals.
They are also used in telephone or other transmitting cables. Each fibre can carry about 2000 telephone messages.
Promotional Banner

Topper's Solved these Questions

  • OPTICS

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|18 Videos

  • OPTICS

    MBD -HARYANA BOARD|Exercise OBJECTIVE TYPE QUESTIONS|26 Videos

  • OPTICS

    MBD -HARYANA BOARD|Exercise OBJECTIVE TYPE QUESTIONS|26 Videos

  • MODEL TEST PAPER - 2

    MBD -HARYANA BOARD|Exercise SET - D ( LONG ANSWER TYPE QUESTIONS)|4 Videos

  • PRINCIPLES OF COMMUNICATION

    MBD -HARYANA BOARD|Exercise Objective Type Questions|19 Videos

Similar Questions

Explore conceptually related problems

What are optical fibres?

In an optical fibre

What is optical fibre ? On what principle it works ? Give two application of optical fibres.

Who invented optical fibre?

Advantages of optical fibres is

Advantage of optical fibre

What are optical fibres ? What is the principle on which optical fibre works ?

MBD -HARYANA BOARD-OPTICS-SHORT ANSWER TYPE QUESTIONS
  1. Why does the sky appear blue on a clear day ?

    Text Solution

    |

  2. Show by drawing ray diagrams how a totally reflecting glass prism can ...

    Text Solution

    |

  3. What are optical fibers ? Give three appilications of these fibres.

    Text Solution

    |

  4. A biconvex lens with both faces of the same radius of curvature is to...

    Text Solution

    |

  5. An astronomical telescope of magnifying power 10 consists of two thin ...

    Text Solution

    |

  6. Why the sun glasses reduce the glare of intense light?

    Text Solution

    |

  7. What is interference of light waves ? State two essential conditions t...

    Text Solution

    |

  8. What is polarization by reflection ? Deduce Brewster'S Law.

    Text Solution

    |

  9. Find the critical angle for a ray of light going from paraffin oil to...

    Text Solution

    |

  10. What is total internal reflection ? Under what conditions it takes pl...

    Text Solution

    |

  11. TOTAL INTERNAL REFLECTION

    Text Solution

    |

  12. Diffraction is common in sound but not comon in light waves. Why ?

    Text Solution

    |

  13. Calculate fringe width in Young's experiment, if screen is placed at 1...

    Text Solution

    |

  14. What is polarisation of light ? What is its most important significan...

    Text Solution

    |

  15. Oil floating on water looks cloured due to interference of light. What...

    Text Solution

    |

  16. Define critical angle for a given pair of medium and find the relatio...

    Text Solution

    |

  17. Define critical angle and give its relation with refractive index.

    Text Solution

    |

  18. Define critical angle for total internal reflection and write its rel...

    Text Solution

    |

  19. Explain the phenomenon of Dispersion. Red and blue light rays are inc...

    Text Solution

    |

  20. What is dispersion of light ?

    Text Solution

    |