Home
Class 11
PHYSICS
A line source emits a cylindrical expand...

A line source emits a cylindrical expanding wave. Assuming the medium absorbs no energy find how the ampitude and intensity of wave depend on the distance from the source?

A

`r^(-1)`

B

`r^(-2)`

C

`r^(-1//2)`

D

`r^(1//2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`I prop 1/r prop A^(2)" "rArr" "A prop r^(-1//2)`
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES

    CP SINGH|Exercise Exercises|130 Videos

  • SIMPLE HARMONIC MOTION

    CP SINGH|Exercise Exercises|125 Videos

  • TEMPERATURE AND THERMAL EXPANSION

    CP SINGH|Exercise EXERCISES|64 Videos

Similar Questions

Explore conceptually related problems

Intensity of sound at a point is its distance from the source

The equation for spherical progressive wave is (where r is the distance from the source)

IF A is the amplitude of the wave coming from a point source at distance r then

If A is the amplitude of the wave coming from a line source at a distance r, then :

A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at the distance of 9 meters and 25 meters respectively from the source. The ratio of amplitudes of the waves at P and Q is…..

Which of the following statement (s) is/are correct? I. A point source emitting waves uniformly in all directions. II. In spherical wave, the locus of point which have the same amplitude and vibrate in same phase are spheres. III. At a small distance from the source, a small portion of sphere can be considered as plane wave.

A point source emits sound equally in all directions in a non-absorbing medium. Two point P and Q are at distance of 2 m and 3 m respectively from the source. The ratio of the intensities of the wave at P and Q is :

CP SINGH-SOUND WAVES-Exercises
  1. If the displacement amplitude of sound is doubled and the frequency re...

    Text Solution

    |

  2. If the amplitude of a wave at a distance r from a point source is A, t...

    Text Solution

    |

  3. A line source emits a cylindrical expanding wave. Assuming the medium ...

    Text Solution

    |

  4. A spherical source of power 4 W and frequency 800 Hz is emitting sound...

    Text Solution

    |

  5. A sound has an intensity of 2 xx 10^(-8) W//m^(2). Its intensity level...

    Text Solution

    |

  6. A person speaking normally produces a sound intensity of 40 dB at a di...

    Text Solution

    |

  7. If the pressure amplitude in a sound wave is tripled, then by what fac...

    Text Solution

    |

  8. If the intensity of sound is doubled, by how many decibels does the so...

    Text Solution

    |

  9. How many times more intense is a 90 dB sound than a 40 dB sound?

    Text Solution

    |

  10. Pitch of a sound depends on :

    Text Solution

    |

  11. The same notes being played on sitar and veena differ in

    Text Solution

    |

  12. When we hear a sound, we can identify its source from

    Text Solution

    |

  13. In an orchestra, the musical sounds of different instruments are disti...

    Text Solution

    |

  14. When sound wave is refracted from air to water, which of the following...

    Text Solution

    |

  15. A sound wave travelling with a velocity V in a medium A reaches a poin...

    Text Solution

    |

  16. A sound wave travels from air to water. The angle of incidence is alph...

    Text Solution

    |

  17. A thin plane membrane separates hydrogen at 7^(@) C from hydrogen at 4...

    Text Solution

    |

  18. The minimum distance to hear echo (speed of sound in air is 340 m//s)

    Text Solution

    |

  19. A engine is approaching a hill at constant speed. When it is at a dist...

    Text Solution

    |

  20. A man stands between two parallel cliffs (not in middle). When he clap...

    Text Solution

    |