Home
Class 12
PHYSICS
Both amplitude modulation (AM) and frequ...

Both amplitude modulation (AM) and frequency modulation (FM) are used for radio broadcasting. The amplitude of the high frequency carrier wave is varied or modulated in accordance with the variations in the amplitude of the audio signals that are to be transmitted, in te process of amplitude modulation in frequency modulation te amplitude of the carrier remains constant but its frequency is varied inn accordance withh the audio signal. Reception with AM signals is in general is affected by interference of various kinds ad elaborated equipment is required for FM broadcast.
The rangeof a transmitter is

A

less low frequecies

B

same for all frequencies

C

less for high frequencies

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    RESONANCE ENGLISH|Exercise Exercise 3|13 Videos
  • COMMUNICATION SYSTEMS

    RESONANCE ENGLISH|Exercise Exercise 1|40 Videos
  • CAPACITANCE

    RESONANCE ENGLISH|Exercise High Level Problems|16 Videos
  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise High Level Problems (HIP)|19 Videos
RESONANCE ENGLISH-COMMUNICATION SYSTEMS-Exercise 2
  1. The carrier frequency generated by a circuit containing 1 nF capacitor...

    Text Solution

    |

  2. the attenution in optical fibre is mainly due to

    Text Solution

    |

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

    Text Solution

    |

  4. AM is used for broadcasting because

    Text Solution

    |

  5. Range of frequencies alotted for commerical FM radio broad cast is

    Text Solution

    |

  6. A sept index fibre has a relavitive refractive index of 0.88%. What is...

    Text Solution

    |

  7. In which frequency range space waves are normally propagated

    Text Solution

    |

  8. If mu and mu(2) are the refractive indices of the materials of core an...

    Text Solution

    |

  9. Through which mode of propagation the radio waves can be sent from one...

    Text Solution

    |

  10. For VHF television broadcasting, the frequency employed is generally

    Text Solution

    |

  11. The radio waves of frequency 30 MHz to 300 MHz belong to

    Text Solution

    |

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

    Text Solution

    |

  13. The electromagnetic waves of frequency 80 MHz to 200 MHz

    Text Solution

    |

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

    Text Solution

    |

  15. The phenomenon used in optical fibres for transitions of light energy ...

    Text Solution

    |

  16. Television signal on earth cannot be recevied at distances greater th...

    Text Solution

    |

  17. Advantage of optical fibre

    Text Solution

    |

  18. Both amplitude modulation (AM) and frequency modulation (FM) are used ...

    Text Solution

    |

  19. Both amplitude modulation (AM) and frequency modulation (FM) are used ...

    Text Solution

    |

  20. Both amplitude modulation (AM) and frequency modulation (FM) are used ...

    Text Solution

    |