Home
Class 12
PHYSICS
The velocity of electromagnetic waves in...

The velocity of electromagnetic waves in a dielectric medium `(in_(r)=4)` is

A

`3xx10^(8) metre//second`

B

`1.5xx10^(8) metre//second`

C

`6xx10^(8) metre//second`

D

`7.5xx10^(7) metre//second`

Text Solution

Verified by Experts

The correct Answer is:
D
`mu=(c)/(v) implies v=7.5xx10^(7)m//sec therefore (D)`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR AND DEVICE

    FIITJEE|Exercise ASSIGNMENT PROBLEMS( objective : Level-II)|37 Videos

  • ROTATIONAL MECHANICS

    FIITJEE|Exercise COMPREHENSION - IV|2 Videos

  • SIMPLE HARMONIC MOTION

    FIITJEE|Exercise Assignment Problems (Objective) (Level-II)|20 Videos

Similar Questions

Explore conceptually related problems

The velocity of electromagnetic waves in a dielectric medium (in_(r )= 4, mu_(r ) =4) is -

The velocity of electromagnetic waves in a dieclectric medium (epsilon_(r)=4) is:

The velocity of electromagnetic wave is parallel to

Velocity of electromagnetic waves in a medium is ..

Velocity of electromagnetic waves in a medium depends upon

The velocity of electromagnetic wave is along the direction of

Velocity of electromagnetic waves in vacuum depends upon

Electric field in plane electromagnetic wave is given by E=50sin(500x-10xx10^(10)t)V//m The velocity of electromagnetic wave in this medium is : (Given C= speed of light in vacuum)

Knowledge Check

  • The velocity of electromagnetic waves in a dielectric medium (in_(r )= 4, mu_(r ) =4) is -

    A
    `3xx10^(8)` metre/second
    B
    `1.5xx10^(8)` metre/second
    C
    `6xx10^(8)` metre/second
    D
    `7.5xx10^(7)` metre/second

  • The velocity of electromagnetic waves in a dieclectric medium (epsilon_(r)=4) is:

    A
    `3xx10^(8) metre//second`
    B
    `1.5xx10^(8) metre//second`
    C
    `6xx10^(8) metre//second`
    D
    `7.5xx10^(7) metre//second`

  • The velocity of electromagnetic wave is parallel to

    A
    `B xx E`
    B
    `E xx B`
    C
    E
    D
    B
    • FIITJEE-SEMICONDUCTOR AND DEVICE-SOLVED PROBLEMS Objective: Level-I
    1. The velocity of electromagnetic waves in a dielectric medium (in(r)=4)...

      Text Solution

      |

    2. For television broadcasting, the frequency employed is normally

      Text Solution

      |

    3. An 'antenna' is:

      Text Solution

      |

    4. The characteristic impedance of a coaxial cable is of the order of

      Text Solution

      |

    5. Long distance short-wave radio broadcasting uses

      Text Solution

      |

    6. Propogation constant of a transmission line is :

      Text Solution

      |

    7. The T.V. transmission tower in Delhi has a height of 240 m. The distan...

      Text Solution

      |

    8. The number of telephone conversations by a fibre of band width 40MHz, ...

      Text Solution

      |

    9. Distance of propogation from antenna of height 20m is

      Text Solution

      |

    10. If critical frquency for ionosphere is 30MHz.Calculate the maximum fre...

      Text Solution

      |

    11. The velocity of electromagnetic waves in a dieclectric medium (epsilo...

      Text Solution

      |

    12. For television broadcasting, the frequency employed is normally.

      Text Solution

      |

    13. An antenna is :

      Text Solution

      |

    14. The characteristic impedance of a co-axial cableis of the order of:

      Text Solution

      |

    15. Long distance short - wave radio frequency broadcasting uses:

      Text Solution

      |

    16. Propogation constant of a transmission line is :

      Text Solution

      |

    17. The T.V.Transmission tower in Delhi has a height of 240m. The distnace...

      Text Solution

      |

    18. The number of telephone conversations by a fibre of band width 40MHz, ...

      Text Solution

      |

    19. Distance of propogation from antenna of height 20m is

      Text Solution

      |

    20. If critical frquency for ionosphere is 30MHz.Calculate the maximum fre...

      Text Solution

      |