Home
Class 12
PHYSICS
For sky wave propagation of a 10 MHz sig...

For sky wave propagation of a `10 MHz` signal, what should be the minimum electron density in ionosphere?

A

`~1.2xx10^(12)m^(-3)`

B

`~10^(6)m^(-3)`

C

`~10^(14)m^(-3)`

D

`~ 10^(22)m^(–3)`

Text Solution

Verified by Experts

The correct Answer is:
A
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

Similar Questions

Explore conceptually related problems

For sky wave propagation of a 18 MHz signal, what should be the minimum electron density in ionosphere ?

For sky wave propagation of a 15 MHz signal what should be the minimum electron density in ionosphere ?

If the critical frequency for sky wave propagation is 12 MHz , then the maximum electron density in the ionosphere is

For sky wave propagation of a 10 MHz signal, which of the following statements are true:

Sky wave propagation is also called

On a particular day, the maximum frequency reflected from the ionosphere is 10MHz. After 10 days, it increaesed to 11 MHz. What is the ratio of the maximum electron density of the ionosphere on these two days ?

On a particular day, the maximum frequency reflected from the ionosphere is 12 MHz, On another day, it was found to decrease to 9 MHz. By what percentage the maximum electron density of the ionosphere has been decreased.

On a particular day, the maximum frequency reflected from the ionosphere is 9 MHz. On another day. It was found to increase by 1 MHz. Calculate the rate of the maximum electron densities of the ionosphere on the two days

ERRORLESS -KINETIC THEORY OF GASES-QUESTIONS
  1. Audio signal cannot be transmitted because

    Text Solution

    |

  2. In which of the following remote sensing technique is not used?

    Text Solution

    |

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

    Text Solution

    |

  4. What should be the maximum acceptance angle at the aircore interface o...

    Text Solution

    |

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

    Text Solution

    |

  6. In a diode AM- detector, the output circuit consist of R=1 k Omega and...

    Text Solution

    |

  7. Consider an optical communication system operating at lambda=800 nm. S...

    Text Solution

    |

  8. A photodetectore is made from a semiconductor. In (0.53)Ga(-0.47)As w...

    Text Solution

    |

  9. A transmitter supplies 9kW to the aerial when unmodulated. The power r...

    Text Solution

    |

  10. The antenna current of an AM transmitter is 8A when only the carrier i...

    Text Solution

    |

  11. The total power content of an AM wave is 1500 W. For 100% modulation, ...

    Text Solution

    |

  12. The total power content of an AM wave is 900 W. For 100% modulation, t...

    Text Solution

    |

  13. The modulation index of an FM carrier having a carrier swing of 200kHz...

    Text Solution

    |

  14. A 500 Hz modulating voltage fed into an FM generator produces a freque...

    Text Solution

    |

  15. The audio signal used to modulate 60 sin (2pixx10^(6)t) is 15 sin 300 ...

    Text Solution

    |

  16. The bit rate for a signal, which has a sampling rate of 8 kHz and whar...

    Text Solution

    |

  17. An amplitude modulated wave is modulated to 50%. What is the saving in...

    Text Solution

    |

  18. In AM, the cent percent modulation is achived when

    Text Solution

    |

  19. Statement-I : Diode lasers are used as optical sources in optical comm...

    Text Solution

    |

  20. Statement-I : Television signals are received through sky-wave propaga...

    Text Solution

    |