Home
Class 10
PHYSICS
Define the term refractive index of a me...

Define the term refractive index of a medium. Can it be less than 1 ?

Text Solution

Verified by Experts

No, the absolute refractive index of a medium cannot be less than one because speed of light in any medium is always less than that of in vacuum.
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Define refractive index of a medium.

Define term, "refreactive index " of a medium.

Define the term refractive index of a medium in terms of velocity of light.

Refractive index of a medium depends on

Can the absolute value of refractive index of a medium be less than unity ?

A light ray in passing from water to a medium (a) speeds up, (b) slows down. In each case, (i) give one example of the medium, (ii) state whether the refractive index of medium is equal to, less than or greater than the refractive index of water.

State the laws of refraction of light. Explain the term 'absolute refractive index of a medium' and write an expression to relate it with the speed of light in vacuum.

How is the refractive index of a medium related to the speed of light ? Obtain an expression for refractive index of a medium with respect to another in terms of speed of light in these two media ?

How is the refractive index of a medium related to the real and apparent depths of an object in that medium ?

How does the refractive index of a medium depend on the wavelength of light used ?

ICSE-SAMPLE PAPER 2013-SECTION-II
  1. Name the radiations : used for detection of fracture in bones.

    Text Solution

    |

  2. Name the radiations : whose wavelength range is from 100 Å to 4000 Å...

    Text Solution

    |

  3. Define the term refractive index of a medium. Can it be less than 1 ?

    Text Solution

    |

  4. A coin placed at the bottom of a beaker appears to be raised by 4.0 cm...

    Text Solution

    |

  5. An object AB is placed between 2F(1)andF(1) on the principal axis of a...

    Text Solution

    |

  6. What is the principle on which SONAR is based ?

    Text Solution

    |

  7. An observer stands at a certain distance away from a cliff and produce...

    Text Solution

    |

  8. A vibrating tuning fork is placed over the mouth of a burette filled w...

    Text Solution

    |

  9. A vibrating tuning fork is placed over the mouth of a burette filled w...

    Text Solution

    |

  10. What is meant by the terms (1) amplitude (2) frequency, of a wave ?

    Text Solution

    |

  11. Explain, why stringed musical instruments, like the guitar, are provid...

    Text Solution

    |

  12. It is observed that the temperature of the surroundings starts falling...

    Text Solution

    |

  13. How is the heat capacity of the body related to its specific heat capa...

    Text Solution

    |

  14. Why does a bottle of soft drink cool faster when surrounded by ice cub...

    Text Solution

    |

  15. A certain amount of heat Q will warm 1 g of material X by 3^(@)C and 1...

    Text Solution

    |

  16. A calorimeter of mass 50 g and specific heat capacity 0.42Jg^(-1)""^(@...

    Text Solution

    |

  17. State Ohm's law and draw a neat labelled circuit diagram containing a ...

    Text Solution

    |

  18. A metal wire of resistance 6Omega is stretched so that its length is i...

    Text Solution

    |

  19. An electrical gadget can give an electric shock to its user under cert...

    Text Solution

    |

  20. What preventive measure provided in a gadget can protect a person from...

    Text Solution

    |