Home
Class 12
PHYSICS
An antenna behaves as resonant circuit o...

An antenna behaves as resonant circuit only when its length is

A

`(lambda)/(2)`

B

`(lambda)/(4)`

C

`lambda`

D

`(lambda)/(2)` or intergral multiple `(lambda)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • HEATING AND CHEMICAL EFFECT OF CURRENT

    ERRORLESS |Exercise Self Evaluation Test|14 Videos

  • MAGNETIC EFFECT OF CURRENT

    ERRORLESS |Exercise Exercise|394 Videos
ERRORLESS -KINETIC THEORY OF GASES-QUESTIONS
  1. For television broadcasting, the frequency employed is normally

    Text Solution

    |

  2. The ratio waves of frequency 300 MHz to 3000 MHz belong to

    Text Solution

    |

  3. An antenna behaves as resonant circuit only when its length is

    Text Solution

    |

  4. Maximum usable frequency (MUF) in F-region layer is x, when the critic...

    Text Solution

    |

  5. The electromagnetic wave of frequency 2 MHz to 30 MHz are

    Text Solution

    |

  6. A laser is a coherent source because it contains

    Text Solution

    |

  7. the attenution in optical fibre is mainly due to

    Text Solution

    |

  8. The maximum distance upto which TV transmission from a TV tower of hei...

    Text Solution

    |

  9. A laser beam is used for carrying our surgery because it

    Text Solution

    |

  10. Laser beams are used to measure long distances because

    Text Solution

    |

  11. An oscillator is producing FM waves of requency 2kHz with a variation ...

    Text Solution

    |

  12. The maximum peak to peak voltage of an AM wire is 24 mV and the minimu...

    Text Solution

    |

  13. Sinusoidal carrier voltage of frequency 1.5 MHz and amplitude 50 V ...

    Text Solution

    |

  14. What is the modulation index of an over modulated wave

    Text Solution

    |

  15. Basically, the product modulator is

    Text Solution

    |

  16. If f(0) and f(f) represent the carrier wave frequencies for amplitude ...

    Text Solution

    |

  17. Which of the following is the disadvantage of FM over AM

    Text Solution

    |

  18. If a number of sine waves with modulation indices n,n,n ........ mod...

    Text Solution

    |

  19. An AM wave has 1800 watt of total power content, For 100% modulation...

    Text Solution

    |

  20. The frequency of a FM transmitter without signal input is called

    Text Solution

    |