Home
Class 12
PHYSICS
An oscillator is producing FM waves of f...

An oscillator is producing FM waves of frequency 2 kHz with a variation of 10 kHz. What is the modulation index?

A

0.67

B

5

C

0.2

D

1.5

Text Solution

Verified by Experts

The correct Answer is:
b
`m_(f)=(Deltaf)/(f)=(10kHz)/(2kHz)=5`
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS II Short Answer Questions.|13 Videos

  • COMMUNICATION SYSTEMS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS  (Additional problems)|3 Videos

  • COMMUNICATION SYSTEMS

    FULL MARKS|Exercise Textual Evaluation Solved (Long Answer Questions)|6 Videos

  • ATOMIC AND NUCLEAR PHYSICS

    FULL MARKS|Exercise Additional question (Numerical Problems)|12 Videos

  • CURRENT ELECTRICITY

    FULL MARKS|Exercise Additional Questions Solved (Numerical Problems)|6 Videos

Similar Questions

Explore conceptually related problems

What is modulated wave ?

________ waves with frequency greater than 20 kHz.

A sound wave of frequency 10 kHz is travelling in air with a speed of 340 ms^-1 . Find the minimum separation between two points where the phase difference is 60^@ .

A source producing a sound of frequency 90 Hz is approaching a stationary listener with a speed equal to (1/10) of the speed of sound. What will be the frequency heard by the listener?

A charged particle oscillates about its mean equilibrium position with a frequency of 10^(9) Hz. What is the frequency of the electromagnetic waves produced by the oscillator ?

A sound wave has a frequency of 2 kHz and wavelength of 15 cm. How much time will it take to travel 1.5 km ?

A person can hear sound waves in the frequency range 20 Hz to 20 kHz. Find the minimum and the maximum wavelengths of sound that is audible to the person. The speed of sound is 360 m s^-1 .

What is the frequency of variation of kinetic energy of SHM. When the frequency f ?

FULL MARKS-COMMUNICATION SYSTEMS-ADDITIONAL QUESTIONS(Multiple Choice Questions)
  1. Laser light is considered to be coherent because it consist of

    Text Solution

    |

  2. The waves used by artificial satellites for communication purposes are

    Text Solution

    |

  3. An oscillator is producing FM waves of frequency 2 kHz with a variatio...

    Text Solution

    |

  4. A laser beam is used for locating distant object because it

    Text Solution

    |

  5. In short wave communication, waves of which of the following frequenci...

    Text Solution

    |

  6. The maximum distance upto which TV transmission from a TV tower of hei...

    Text Solution

    |

  7. If the highest modulating frequency of the wave is 5 kHz, the number o...

    Text Solution

    |

  8. In communication with help of antenna if height is doubled, then the r...

    Text Solution

    |

  9. A laser beam is used for carrying out surgery, because it

    Text Solution

    |

  10. The ozone layer is present in

    Text Solution

    |

  11. Ozone layer blocks the radiation of wavelength

    Text Solution

    |

  12. What is the cause of Green house effect?

    Text Solution

    |

  13. Ozone layer in atmosphere is useful, because it

    Text Solution

    |

  14. Biological importance of ozone layer is

    Text Solution

    |

  15. The particular used for transmission of light signal through optical ...

    Text Solution

    |

  16. LANDSAT series of satellites move in near polar orbits at an altitude ...

    Text Solution

    |

  17. Which of the following is not a transducer?

    Text Solution

    |

  18. If a radio receiver amplifies all the signal frequencies equally well,...

    Text Solution

    |

  19. The sky wave propagation is suitable for radio waves of frequency

    Text Solution

    |

  20. Refractive index of ionosphere is

    Text Solution

    |