Home
Class 12
PHYSICS
(a) A source of sound S and a detector D...

(a) A source of sound `S` and a detector `D` are placed at some distance from one another. A big cardboard is placed near the detector and perpendicular to the line `SD` as shown in figure. It is gradually moved away and it is found that the intensity changes from a maximum to a minimum as the board is moved through a distance of `20 cm.` Find the frequency of the sound emitted. Velocity of sound in are is `336 m//s.`

(b) A source emitting sound of frequency `180 Hz` is placed in front of a wall at a distance of `2 m` from it. A detector is also placed in front of the wall at the same distance from it. find the minimum distance between the source and the detector for which the detector detects a maximum of sound . Speed of sound in air `= 360 m//s.`

Text Solution

Verified by Experts

3m
Promotional Banner

Topper's Solved these Questions

  • WAVE - II

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (SINGLE CORRECT CHOICE TYPE)|35 Videos

  • WAVE - II

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (MORE THAN ONE CORRECT CHOICE TYPE)|6 Videos

  • WAVE - II

    RESNICK AND HALLIDAY|Exercise CHECKPOINTS|4 Videos

  • VECTORS

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS|39 Videos

  • WAVES-I

    RESNICK AND HALLIDAY|Exercise Practice Questions (Integer Type)|4 Videos

Similar Questions

Explore conceptually related problems

A source emitting sound of frequency 180 Hz is alced in front of a wall at a distance of 2 m from it. A detector is also placed in front of the weal at the same distance from it. Find the minimum distance between the source and the detector for which the detector detects a maximum of sound. Speed of sound in air =360ms^-1 .

A source emitting sound of frequency 180 Hz is placed in front of a wall at distance of 2 m from it . A detector is also placed in front of the wall at the same distance from it. From the minimum distance between the source and the detector for which the detector detects a maximum of sound. Speed of sound in air = 360 m//s .

A source emitting sound of frequency 165 Hz is placed in frount of a wall at a distance of 2 m from it. A detector is also placed in fornt of the wall at the same distance from it. Find the distance between the source and the detector for which the detector detects phase difference of 2pi between the direct and reflected wave. Speed of sound in air = 330 m//s .

A soure of sound of frequency 165 hz is placed in front of a wall at a distance 2 m from it. A dtector is also placed in front of the wall at the same distance from it. Find the minimum distance between the source and detector for which maximum sound is recorded int he detector . the speed of sound is 330 m/s

A source of sound emitting waves at 360 H_(Z) is placed in front of a vertical wall, at a distance 2 m from it. A detector is also placed in front of the wall at the same distance from it. Find the minimum distance between the source and the detestor for which the detector detects a maximum of sound. Take speed of sound in air = 360 m//s . Assume that there is not phase change in reflected wave.

In Quincke's experiment the sound detected is changed from a maximum to a minimum when the sliding tube is moved through a distance of 2.50 cm. Find the frequency of sound if the speed of sound in air is 340 m s^-1 .

A sound wave completes one oscillation in 0.002 s and moves a distance of 30 cm. Find the frequency of the wave.

A source of sound emitting a 1200 Hz note travels along a straight line at a speed of 170 m s^-1 . A detector is placed at a distance of 200 m from the line of motion of the source. (a) Find the frequency of sound received by the detector at the instant when the source gets closest to it. (b) Find the distance between the source and the detector at the instant it detects the frequency 1200 Hz. Velocity of sound in air = 340 m s^-1 .

RESNICK AND HALLIDAY-WAVE - II-PROBLEMS
  1. Figure shows two point sources S1 and S2 that emit sound of waveleng...

    Text Solution

    |

  2. An ambulance with a siren emitting a whine at 1620 Hz overtakes and pa...

    Text Solution

    |

  3. When the door of the Chapel of the Mausoleum in Hamilton, Scotland, is...

    Text Solution

    |

  4. A stationary detector measures the frequency of a sound source that fi...

    Text Solution

    |

  5. Figure shows two isotropic point sources of sound, S1 and S2 The sourc...

    Text Solution

    |

  6. Approximately a third of people with normal hearing have ears that con...

    Text Solution

    |

  7. Two loud speakers are located 3.35 m apart on an outdoor stage. A list...

    Text Solution

    |

  8. In Fig. , two speakers separated by distance d1 = 2.00 m are in phase....

    Text Solution

    |

  9. In Fig., sound waves A and B, both of wavelength lamda , are initially...

    Text Solution

    |

  10. A girl is sitting near the open window of a train that is moving at a ...

    Text Solution

    |

  11. In Fig., S is a small loud speaker driven by an audio oscillator with ...

    Text Solution

    |

  12. The pressure in a traveling sound wave is given by the equation Del...

    Text Solution

    |

  13. A well with vertical sides and water at the bottom resonates at 7Hz a...

    Text Solution

    |

  14. A column of soldiers, marching at 100 paces per minute, keep in step w...

    Text Solution

    |

  15. From two sources, sound waves of frequency 270 Hz are emitted in phase...

    Text Solution

    |

  16. Suppose that the sound level of a conversation is initially at an angr...

    Text Solution

    |

  17. A sound wave in a fluid medium is reflected at a barrier so that a sta...

    Text Solution

    |

  18. A train approachign a railway crossing at a speed of 120 kmh^-1 sounds...

    Text Solution

    |

  19. (a) A source of sound S and a detector D are placed at some distance f...

    Text Solution

    |

  20. Figure shows a source of sound moving along the X-axis at a speed of 2...

    Text Solution

    |