Home
Class 11
PHYSICS
The sound intensity is 0.008W//m^( 2) at...

The sound intensity is `0.008W//m^( 2)` at a distance of 10 m from an isotropic point source of sound. The power of the source is

A

`2.5` watt

B

`0.8` watt

C

`8` watt

D

`10` watt

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES

    RESONANCE|Exercise Exercise- 2 PART - I|25 Videos
  • SOUND WAVES

    RESONANCE|Exercise Exercise- 2 PART - II|20 Videos
  • SOUND WAVES

    RESONANCE|Exercise Exercise- 1 PART - I|34 Videos
  • SIMPLE HARMONIC MOTION

    RESONANCE|Exercise Exercise|28 Videos
  • STRING WAVES

    RESONANCE|Exercise Exercise|32 Videos

Similar Questions

Explore conceptually related problems

A point A is located at a distance r = 1.5 m from a point source of sound of frequency 600 H_(Z) . The power of the source is 0.8 W . Speed of sound in air is 340 m//s and density of air is 1.29 kg//m^(3) . Find at the point A , (a) the pressure oscillation amplitude (Deltap)_(m) (b) the displacement oscillation amplitude A .

A person is standing at a distance D from an isotropic point source of sound He walks 50.0 m towards the source and observes that the intensity of the sound has doubled. His initial distance D from the source is

What is the intensity at radial distances (a) 2.50 m and (b) 6.00 m from an isotropic point source of sound that emits energy at the rate 12.0 W, assuming no energy absorption by the surrounding air?

A person standing at a distance of 6 m from a source of sound receives sound wave in two ways, one directly from the source and other after reflection from a rigid boundary as shown in figure. The maximum wavelength for which, the person will receive maximum sound intensity, is

Find the damping coefficient v of a sound wave if at distances r_(1)=10m and r_(2)=20 m from a point isotropic source of sound the sound wave intensity values differ by a factor eta=4.5 .

The intensity of sound from a point source is 1.0 xx 10^-8 Wm^-2 , at a distance of 5.0 m from the source. What will be the intensity at a distance of 25 m from the source ?

Intensity level at a distance 200 cm from a point source of sound is 80 dB. If there is it loss of acoustic power in air and intensity of threshold hearing is 10^-12 W m^-2 , then the intensity level at a distance of 4000 cm from source is (log 20 = 1.3)

RESONANCE-SOUND WAVES-Exercise- 1 PART - II
  1. A sound of intensity I is greater by 3.0103 dB from anoterh sound of i...

    Text Solution

    |

  2. For a sound source of intensity IW//m^(2), corresponding sound level i...

    Text Solution

    |

  3. The sound intensity is 0.008W//m^( 2) at a distance of 10 m from an is...

    Text Solution

    |

  4. What happens when a sound wave interfers with another wave of same fre...

    Text Solution

    |

  5. Sound waves from a tuning fork F reach a point P by two separate route...

    Text Solution

    |

  6. Sound signal is sent through a composite tube as shown in the figure. ...

    Text Solution

    |

  7. A person is talking in a small room and the sound intensity level is 6...

    Text Solution

    |

  8. An inteference is observed due to two coherent sources A and B separat...

    Text Solution

    |

  9. When a sound wave is reflected from a wall the phase difference betwee...

    Text Solution

    |

  10. If lambda(1), lambda(2), lambda(3) are the wavelengths of the waves gi...

    Text Solution

    |

  11. An open organ pipe of length L vibrates in its fundamental mode. The p...

    Text Solution

    |

  12. The fundamental frequency of a closed organ pipe is same as the first ...

    Text Solution

    |

  13. Two identical tubes A and B are kept in air and water respetively as s...

    Text Solution

    |

  14. A tube of diameter d and of length l unit is open at both ends. Its fu...

    Text Solution

    |

  15. The second overtone of an open pipe A and closed pipe B have the same ...

    Text Solution

    |

  16. A resonance tube is resonated with tuning fork of frequency 256 Hz. If...

    Text Solution

    |

  17. A sound source of frequency 512 Hz is producing 6 beats with a guitar....

    Text Solution

    |

  18. Three sound waves of equal amplitudes have frequencies (v - 1), v, (v ...

    Text Solution

    |

  19. A closed organ pipe and an open organ pipe of same length produce 4 be...

    Text Solution

    |

  20. Which of the following does not affect the apparent frequency in doppt...

    Text Solution

    |