Home
Class 12
PHYSICS
In communication with help of antenna if...

In communication with help of antenna if height is doubled then the range covered which gas initially r would become

A

`sqrt(2)r`

B

3r

C

4r

D

5r

Text Solution

Verified by Experts

The correct Answer is:
A
Range `r = sqrt(2 Rh)`
where R is the radius of the earth and h is the height of a antenna
`therefore r' = sqrt(2R(2h))=sqrt(2)(sqrt(2Rh))=sqrt(2)r`.
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2006

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

  • AIIMS 2008

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

If the mean free path of atoms is doubled then the pressure of gas will become

Assertion: When the height of a TV transmission tower is increased by three times. The range covered is doubled. Reason: The range covered is proportional to the height of the TV transmission tower.

For a given angle of projection, if the initial velocity of a projectile is doubled, then its horizontal range will become ____ times the original horizontal range. ____.

A TV transmission tower antenna is at a height of 20m. The percentage increase in area covered in case if the receiving antenna is at ground level to that at a height of 25 m is (Radius of earth =6.4xx10^(6)m )

In circular coil, when no. of turns is doubled and resistance becomes (1)/(4)th of initial, then inductance becomes

In the reaction aA+bB to products, if concentration of A is doubled (keeping B constant) the initial rate becomes four times and if B is doubled (keeping A constant), the rate becomes double. What is the rate law equation and order of reaction ?

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2007-PHYSICS
  1. If the highest modulating frequency of the wave is 5 kHz, the number o...

    Text Solution

    |

  2. Zener diode acts as a/an

    Text Solution

    |

  3. In communication with help of antenna if height is doubled then the ra...

    Text Solution

    |

  4. Which wavelength of sun is used finally as electric energy ?

    Text Solution

    |

  5. CO(2) laser uses

    Text Solution

    |

  6. Shear modulus is zero for

    Text Solution

    |

  7. Height of geostationary satellite is

    Text Solution

    |

  8. If a solid sphere of mass 1 kg and radius 0.1 m rolls without slipping...

    Text Solution

    |

  9. In the diagram shown below all three rods are of equal length L and eq...

    Text Solution

    |

  10. In the half wave rectifier circuit operating from 50 Hz mains frequenc...

    Text Solution

    |

  11. In an AC circuit the potential differences across an inductance and re...

    Text Solution

    |

  12. The focal length of the objective and eye lenses of a microscope are 1...

    Text Solution

    |

  13. If the temperature of a black body incresese from 7^(@)C to 287^(@)C ...

    Text Solution

    |

  14. Faraday law of electrolysis indirectly shows

    Text Solution

    |

  15. What is the amount of energy released by deuterium and tritum fusion ?

    Text Solution

    |

  16. What is the energy of photon whose wavelength is 6840 Å ?

    Text Solution

    |

  17. What is the power output of a .(92) U^(235) reactor if it is takes 30 ...

    Text Solution

    |

  18. A transistor is a/an

    Text Solution

    |

  19. The number 0 (zero) is required for

    Text Solution

    |

  20. The magnetic susptibility of an ideal diamagnetic substance is

    Text Solution

    |