Home
Class 11
PHYSICS
A modem is a...

A modem is a

A

modulating device only .

B

demodulating device only

C

modulating and demodulating device.

D

transmitting device.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Evaluation Test|15 Videos
  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Critical Thinking|34 Videos
  • ELECTRONS AND PHOTONS

    TARGET PUBLICATION|Exercise Evaluation Test|19 Videos

Similar Questions

Explore conceptually related problems

In modem times now what are the methods of communication?

Modem is used to

In which block of the modem periodic table are the transition and inner transition elements placed ?

Read the statements (A) Morphological concept of species ie. static concept of species was given by Linnaeus (B) Linnaeus shown that species are fixed, unchangable,existing species originated in their present form (C) concept of species was given by Darwin, Lamarck (D)According to Darwin and Lamarck species is non static,mutable,show changes during passage of time (E) Modem biological concept species was given by Ernst Mayr

TARGET PUBLICATION-COMMUNICATION SYSTEMS-Competitive Thinking
  1. The distance of coverage of a transmitting antenna is 12 . 8 km . Then...

    Text Solution

    |

  2. If a transmitting antenna of height 105 m is placed on a hill, then it...

    Text Solution

    |

  3. A radar has a power of 1 kW and is operating at a frequency of 10 GHz ...

    Text Solution

    |

  4. Height of T .V . Tower is h(T) . The area of transmission of T . V . W...

    Text Solution

    |

  5. In an amplitude modulated wave for audio frequency of 500 "cycle"//sec...

    Text Solution

    |

  6. A modem is a

    Text Solution

    |

  7. The electromagnetic wave of frequency 3 MHz to 30 MHz are used

    Text Solution

    |

  8. In which frequency range, space waves are normally propagated?

    Text Solution

    |

  9. Name the type of waves which are used for line of sight (LOS) communic...

    Text Solution

    |

  10. The ionosphere is used for the propagation of

    Text Solution

    |

  11. The maximum frequency of transmitted radio waves above which the radio...

    Text Solution

    |

  12. For sky wave propagation of a 10 MHz signal, what should be the minimu...

    Text Solution

    |

  13. A sky wave with a frequency 55 MHz is incidenet on D-region of earth's...

    Text Solution

    |

  14. A diode detector is used to detect an amplitude modulated wave of 60% ...

    Text Solution

    |

  15. A telephonic communication service is working at carrier frequency of ...

    Text Solution

    |

  16. A transmitting antenna of height h and the receiving antenna of heigh...

    Text Solution

    |

  17. In optical communication system operating at 1200nm, only 2% of the so...

    Text Solution

    |

  18. Assertion : Electromagnetic waves with frequencies more than the criti...

    Text Solution

    |

  19. A message signal frequency omega(m) is superpiosed on a carrier wave o...

    Text Solution

    |

  20. (a). Assertion (A) is true, Reason (R) is also true, Reason (R) is the...

    Text Solution

    |