Home
Class 12
PHYSICS
The maximum line-of -sight distance d(M)...

The maximum line-of -sight distance `d_(M)` between two antennas having heights `h_(T)` and `H_(R)` above the earth is

A

`d_m=sqrt2Rh_T-sqrt2Rh_R`

B

`d_m=(sqrt2Rh_T-sqrt2Rh_R)^2`

C

`d_m=sqrt2Rh_T+sqrt2Rh_R`

D

`d_m=(sqrt2Rh_T+sqrt2Rh_R)^2`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 4

    AAKASH INSTITUTE ENGLISH|Exercise Example|29 Videos
  • MOCK TEST 5

    AAKASH INSTITUTE ENGLISH|Exercise Example|314 Videos

Similar Questions

Explore conceptually related problems

Two particles are projected vertically upwards from the surface of the earth with velocities upsilon_(1) = sqrt((2gR)/3) and upsilon_(2) = sqrt((4gR)/(3)) respectively. If the maximum heights attained by the two particles are h_(1) and h_(2) respectively, then calculate the ratio (h_1)/(h_2) .

A simple pendulum has a time period T_(1) when on the earth's surface and T_(2) when taken to a height R above the earth's surface, where R is the radius of the earth. The value of (T_(2))/(T_(1)) is

A transmitting antenna at the top of the tower has a height 18 m and the height of the receiving antenna is 32m. The maximum distance between them for satisfactory communciation in line of sight mode is (Radius of earth = 6.4xx10^(6)m )

A transmitting antenna at the top of the tower has a height 18 m and the height of the receiving antenna is 32m. The maximum distance between them for satisfactory communciation in line of sight mode is (Radius of earth = 6.4xx10^(6)m )

A T.V. transmitting antenna is 128 m tall . If the receiving antenna is at the ground level , the maximum distance between them for satisfactory communication in L.O.S. mode is (Radius of the earth = 6.4 xx 10^(6) m )

The range R of projectile is same when its maximum heights are h_(1) and h_(2) . What is the relation between R, h_(1) and h_(2) ?

Two particles are projected obliquely from ground with same speed such that their range 'R' are same but they attain different maximum heights h_(1) and h_(2) then relation between R, h_(1) and h_(2) is:

Two particles are projected obliquely from ground with same speed such that their range 'R' are same but they attain different maximum heights h_(1) and h_(2) then relation between R, h_(1) and h_(2) is:

Two particles are projected obliquely from ground with same speed such that their range 'R' are same but they attain different maximum heights h_(1) and h_(2) then relation between R, h_(1) and h_(2) is:

A transmitting antenna at the top of a tower has a height of 20m and the height of the receiving antenna is 45m. Calculate the maximum distance between them for satisfactory communication in LOS mode. (Radius of the Earth = 6.4 xx 10^(6) m)

AAKASH INSTITUTE ENGLISH-Mock Test 40: PHYSICS-Example
  1. An AND gate can be prepared by repetitive use of

    Text Solution

    |

  2. For a transistor, in a common emitter arragement, the alternating curr...

    Text Solution

    |

  3. Transistors can work as a switch in

    Text Solution

    |

  4. Transconductance in CE amplifier circuit is defined as

    Text Solution

    |

  5. Power Gain of CE amplifier circuit is given by

    Text Solution

    |

  6. The following gate is equivalent to

    Text Solution

    |

  7. The element X and Y in the communication system (figure) are respectiv...

    Text Solution

    |

  8. The length of half wave dipole antenna at 50 MHz is

    Text Solution

    |

  9. The process of increasing the strength of a signal using an electronic...

    Text Solution

    |

  10. A device that converts one from of energy into another form is termed ...

    Text Solution

    |

  11. The power radiated by linear antenna of length 'l' is proportional to ...

    Text Solution

    |

  12. One of the components of frequency of amplitude modulated wave (AM) fo...

    Text Solution

    |

  13. Amplitude modulation index mu determines

    Text Solution

    |

  14. If Am and Ac are the amplitudes of modulating signal and carrier wave ...

    Text Solution

    |

  15. The maximum line-of -sight distance d(M) between two antennas having h...

    Text Solution

    |

  16. The amplitude modulated signal consists of two sinusoidal waves of fre...

    Text Solution

    |

  17. An AM transmitter radiates 70 kW of carrier power. The radiated power ...

    Text Solution

    |

  18. If omegac and omegam are angular frequencies of carrier wave and modul...

    Text Solution

    |

  19. Communication through free space using radio waves takes place over fr...

    Text Solution

    |

  20. During the process of modulation, if phase of the carrier wave is vari...

    Text Solution

    |