Home
Class 12
PHYSICS
When a low flying air craft passes over ...

When a low flying air craft passes over head we some times notice a slight shaking of the picture on our TV screen. This is due to

A

diffraction of the signal received from the antenna

B

interference of the direct signal received by the antenna with the weak signal reflected by the passing aircraft

C

Change of magnetic flux occurring due to the passage of aircraft

D

vibrations created by the passage of aircraft

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC WAVES

    AAKASH SERIES|Exercise EXERCISE -IB|39 Videos
  • ELECTROMAGNETIC WAVES

    AAKASH SERIES|Exercise EXERCISE -II|20 Videos
  • ELECTROMAGNETIC WAVES

    AAKASH SERIES|Exercise EXERCISE -II|20 Videos
  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise Additional Exercise|10 Videos
  • ELECTROMAGNETICS

    AAKASH SERIES|Exercise ADDITIONAL EXERCISE|6 Videos
AAKASH SERIES-ELECTROMAGNETIC WAVES-EXERCISE -IA
  1. The frequency of X - rays, gamma - rays and Ultra­violet rays are resp...

    Text Solution

    |

  2. A lamp radiates power Po uniformly in all directions, the amplitude of...

    Text Solution

    |

  3. When a low flying air craft passes over head we some times notice a sl...

    Text Solution

    |

  4. If the earth had no atmosphere, the average surface temperature would ...

    Text Solution

    |

  5. Ozone layer absorbs these radiations of sun

    Text Solution

    |

  6. Ozone layer blocks the radiations of wave length

    Text Solution

    |

  7. Ozone layer absorbs all such radiation whose wavelengths are

    Text Solution

    |

  8. A radiation of energy E falls normally on a perfectly reflecting surfa...

    Text Solution

    |

  9. The type of electromagnetic wave propagation which is effected as a re...

    Text Solution

    |

  10. X-rays are known as to be electromagnetic radi­ation. Therefore the X-...

    Text Solution

    |

  11. The altitude of the ozone layer in the atmosphere and the ‘type’ of th...

    Text Solution

    |

  12. Four atmospheric layers are given below, namely (i) stratosphere (ii) ...

    Text Solution

    |

  13. Infrared radiation is detected by

    Text Solution

    |

  14. Finger prints on a piece of paper may be detected by sprinkling fluore...

    Text Solution

    |

  15. The atmosphere above the height of 80 km is called

    Text Solution

    |

  16. The frequency from 3Hz to 30MHz is known as

    Text Solution

    |

  17. The frequency from 3xx10^(9) Hz to 3xx10^(10) Hz is

    Text Solution

    |

  18. A cube of edge a has its edges parallel to X, Y and Z -axis of rectang...

    Text Solution

    |

  19. Green house effect is due to

    Text Solution

    |

  20. One requires lleV of energy to dissociate a carbon monoxide molecule i...

    Text Solution

    |