Home
Class 12
PHYSICS
Maximum usable frequency (MUF) in F-regi...

Maximum usable frequency (MUF) in F-region layer is x, when the critical frequency is 60 MHz and the angle of incidence is `70^(@)`, then x is

A

150 MHz

B

170 MHz

C

175 MHz

D

190 MHz

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Maximum usable frequency ( MUF ) in F -region layer is x , when the critical frequency is 60 MHz and the angle of incidence is 60^(@) . Then x is

What is the maximum usuable frequency (in MHz) for E-layer of atomosphere having critical frequency 4 MHz, when the angle of incidence is 60^(@)

The maximum usable fequency in F-layer with original frequency in 50 MHz will be

If critical frequency is 40 MHz then calculate maximum density of electron-

If critical frequency is 40 MHz then calculate maximum density of electron-

What is the refractive index of E-layer when the electromgnetic wave frequency is 50 MHz and the number density of electrons is 5xx10^(5) electrons is 5xx10^(5) electrons //cm^(3) ?

In earth's atmosphere , for F_(2) - layer, the virtual height and critical frequency in night time are

In earth's atmosphere for F_(1) -layer , the virutal height and critical frequency are

Light of wavelength 6000 Å falls on a plane reflecting surface. What are the wavelength and frequency of reflected light. If angle between incident ray and reflected ray is 60^@ , what is the angle of incidence ?

The sky wave with a frequency of 20 MHz is incidnet on D-region at an angle of 45^(@) , then angle of refraction is

DISHA-COMMUNICATION SYSTEM-Physics
  1. If mu and mu(2) are the refractive indices of the materials of core an...

    Text Solution

    |

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

    Text Solution

    |

  3. Laser light is considered to be coherent because it consists of

    Text Solution

    |

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

    Text Solution

    |

  5. Laser beams are used to measure long distances because

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  8. An antenna is a device

    Text Solution

    |

  9. While tuning in a certain broad cast station with a receiver, we are a...

    Text Solution

    |

  10. In a communication system, noise is most likely to affect the signal

    Text Solution

    |

  11. In an FM system a 7kHz signal modulates 108 MHz carrier so that freque...

    Text Solution

    |

  12. The phenomenon by which light travels in an optical fibres is

    Text Solution

    |

  13. In frequency modulation

    Text Solution

    |

  14. Audio signal cannot be transmitted because

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. What type of modulation is employed in india for radio transmission

    Text Solution

    |

  19. Which of the following are the characteristics of Laser beams? (1) The...

    Text Solution

    |

  20. The electron density of a layer of ionosphere at a height 150 km from ...

    Text Solution

    |