Home
Class 12
PHYSICS
An airplane flying at a distance of 10 k...

An airplane flying at a distance of 10 km from a radio transmitter receives a signal of intensity 28 `muW//m^(2)` . What is the amplitude of the (a) electric and (b) magnetic component of the signal at the airplane ? ( c) If the transmitter radiates uniformly over a hemisphere what is the transmission power ?

Text Solution

Verified by Experts

(a) `0.15 V//m , (b) 0.48 ` nT , ( c) 18 kW
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC WAVES

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Single Correct Choice Type )|62 Videos

  • ELECTROMAGNETIC WAVES

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (More than One Correct Choice Type )|4 Videos

  • ELECTROMAGNETIC WAVES

    RESNICK AND HALLIDAY|Exercise CHECKPOINT|3 Videos

  • ELECTROMAGNETIC OSCILLATIONS AND ALTERNATING CURRENT

    RESNICK AND HALLIDAY|Exercise Practice Questions (Integer)|7 Videos

  • FLUIDS

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Integer Type )|5 Videos

Similar Questions

Explore conceptually related problems

A plane electromagnetic wave with wavelength 5.0 m, travels in vacuum in the positive direction of an x axis . The electric field of amplitude 215 V/m oscillates parallel to the y axis. What are the (a) frequency (b) angular frequency and ( c) angular wave number of the wave ? (d) What is the amplitude of the magnetic field component ? (e) Parallel to which axis does the magnetic field oscilate ? (f) What is the time -averaged rate of energy flow in watts per square meter associated with this wave ? The wave uniformly illuminates a surface of area 2.0 m^(2) . If the surface totally absorbs the wave what are (g) the rate at which momentum is transferred to the surface and (h) the radiation pressure on the surface ?

Two radio stations broadcast their programmes at the same amplitude A and at slightly different frequencies omega_(1) and omega_(2) respectively, where omega_(1) - omega_(2) = 10^(3) Hz A detector receives the signals from the two stations simultaneously. it can only detect signals of intensity ge 2A^(2) . (i) Find the time interval between successive maxima of the intensity of the signal received by the detector. (ii) Find the time for which the detector remains idle in each cycle of the intensity of the signal.

A person sitting at a distance of 10m from a point source of sound of power W_(0) writes down the following equation for the waves received by him. y=Asin(20pix+7000pit) (a) Determine the density of the air, if the Bulk modules of air =1.40xx10^(5)Nm^(-2) (b) If the largest pressure amplitude tolerable to a human car is 28Pa then determine the maximum power W_(0) of the second source and the displacement amplitude A of the waves receive by him.

In a plane e.m.wave, the electric field oscillates sinusoidally at a frequency 2xx10^10Hz and amplitude 45Vm^-1 . (a) What is the wavelength of wave? (b) What is the amplitude of the oscillating magnetic field? (c) Show that the average energy density of the electric field vecE equals to the average energy density of the magnetic field vecB .

RESNICK AND HALLIDAY-ELECTROMAGNETIC WAVES -PROBLEMS
  1. In a plane radio wave the maximum value of the electric field componen...

    Text Solution

    |

  2. A plane electromagnetic wave with wavelength 5.0 m, travels in vacuum ...

    Text Solution

    |

  3. A black totally absorbing piece of carboard of area A=2.0 cm^(2) inter...

    Text Solution

    |

  4. What is the intensity of a traveling plane electromagnetic wave if Bm"...

    Text Solution

    |

  5. From fig 32-2 approximate the (a) smaller and (b) larger wavelength at...

    Text Solution

    |

  6. Sunlight just outside Earth's atmosphere has an intensity of 1.40k W//...

    Text Solution

    |

  7. Assume (unrealistically ) that a TV station acts as a point source bro...

    Text Solution

    |

  8. A plane electromagnetic wave with has a maximum electric field magnitu...

    Text Solution

    |

  9. What inductance must be connected to a 25 p F capacitor in an oscillat...

    Text Solution

    |

  10. What is the radiation pressure 2.7 m away from a 315 W lightbulb ? Ass...

    Text Solution

    |

  11. The intensity I of light from an isotropic point source is determined ...

    Text Solution

    |

  12. An airplane flying at a distance of 10 km from a radio transmitter rec...

    Text Solution

    |

  13. In Fig.32-30 a light ray in water is incident at angle theta(1) on a b...

    Text Solution

    |

  14. A certain helium -neon laser emits red light in a narrow band of wavel...

    Text Solution

    |

  15. In Fig 32-31 a light ray in air is incident on a flat layer of materia...

    Text Solution

    |

  16. A plane electromagnetic wave traveling in the positive direction of an...

    Text Solution

    |

  17. What is the wavelength of the electromagnetic wave emitted by the osci...

    Text Solution

    |

  18. Unpolarized light of intensity 6.5 mW//m^(2) is sent into a polarizing...

    Text Solution

    |

  19. Some neodymium -glass lasers can provide 100 TW of power in 2.2 ns pul...

    Text Solution

    |

  20. (a) At what angle of incidence will the light reflected from water be ...

    Text Solution

    |