Home
Class 12
PHYSICS
Sounds waves travel at 350m//s through a...

Sounds waves travel at `350m//s` through a warm air and at `3500m//s` through brass. The wavelength of a `700 Hz`. Acoustic wave as it enters brass from warm air

A

increases by a factor 20

B

increases by factor 10

C

decreases by a factor 20

D

decreases by a factor 10

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • THERMAL AND CHEMICAL EFFECTS OF CURRENt

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|34 Videos

  • WORK, ENERGY AND POWER

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise objective|51 Videos
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-WAVES-All Questions
  1. Two sources of sound placed close to each other are wmitting progressi...

    Text Solution

    |

  2. Two waves are represented by the equations y1=asin(omegat=kx+0.57)m an...

    Text Solution

    |

  3. Sounds waves travel at 350m//s through a warm air and at 3500m//s thro...

    Text Solution

    |

  4. A transverse wave is represented by y=Asin(omegat-kx). For what value ...

    Text Solution

    |

  5. A tuning fork of frequency 512 Hz makes 4 beats//s with the vibrating ...

    Text Solution

    |

  6. The driver of a car travelling with speed 30ms^-1 towards a hill sound...

    Text Solution

    |

  7. A wave in a string has an amplitude of 2 cm. The wave travels in the +...

    Text Solution

    |

  8. The wave described by y = 0.25 "sin"(10 pi x - 2pit) , where x and y a...

    Text Solution

    |

  9. Two periodic waves of intensities I(1) and I(2) pass through a region ...

    Text Solution

    |

  10. Which one the following statements is ture?

    Text Solution

    |

  11. The time of reverberation of a room A is one second. What will be the ...

    Text Solution

    |

  12. A transverse wave propagating along x-axis is represented by: y(x,t)=8...

    Text Solution

    |

  13. Two sound waves with wavelengths 5.0 m and 5.5 m respectively, each pr...

    Text Solution

    |

  14. Two vibrating tuning fork produce progressive waves given by y(1) = 4 ...

    Text Solution

    |

  15. A point source emits sound equally in all directions in a non-absorbin...

    Text Solution

    |

  16. The two waves are represented by y(1)= 10^(-6) sin(100t + (x)/(50)+ ...

    Text Solution

    |

  17. A car is moving towards a high cliff. The car driver sounds a horn of ...

    Text Solution

    |

  18. An observer moves towards a stationary source of sound with a speed ((...

    Text Solution

    |

  19. A whistle revolves in a circle with an angular speed of 20 rad//sec us...

    Text Solution

    |

  20. A wave travelling in positive X-direction with A=0.2m has a velocity o...

    Text Solution

    |