Home
Class 11
PHYSICS
The intensity level of two sounds are 10...

The intensity level of two sounds are 100 dB and 50 dB. What is the ratio of their intensities?

A

`10^1`

B

`10^3`

C

`10^5`

D

`10^10`

Text Solution

Verified by Experts

The correct Answer is:
C
`100=10log_(10)((I_1)/(I_0))`
`50=10log_(10)((I_2)/(I_0))`
or `(I_1)/(I_0)=10^10` and `(I_2)/(I_0)=10^5`
Dividing, `(I_1)/(I_2)=10^5`
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS|Exercise Multiple Correct|44 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS|Exercise Assertion-Reasoning|24 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS|Exercise Subjective|56 Videos

  • RIGID BODY DYNAMICS 2

    CENGAGE PHYSICS|Exercise Interger|2 Videos

  • SUPERPOSITION AND STANDING WAVES

    CENGAGE PHYSICS|Exercise Comprehension Type|5 Videos

Similar Questions

Explore conceptually related problems

Two sound waves from two different sources interfere at a point to yield a sound of varying intensity. The intensity level between the maximum and minimum is 20 dB. What is the ratio of the intensities of the individual waves?

Many veteran rockers suffer from acute hearing damage because of the high sound levels they endured for years. Many rockers now wear special earplugs to protect their hearing during performances . If an earplug decreases the sound level of the sound waves by 20 dB, what is the ratio of the final intensity I_f of the waves to their initial intensity I_i ?

The intensity of sound B is 500 times that of sound A. What is the difference in their intensity levels?

Two sounds differ in sound level by 3.00 dB. What is the ratio of the greater intensity to the smaller intensity?

The intensity level of a sound of intensity of 10^(-12)wat t//cm^(2) is 40 dB. What is the zero level of intensity ?

Find the intensity level of a sound wave in decibles of a sound wave whose intensity is 10^(-10) cm^(-2) . Take zero level of intensity = 10^(-12)Wm^(-2) .

(i) The intensity of a light pulse travelling along a communication channel decreases exponentially with distance x according to the relation I = I_0 e^(-alphax) , where I_0 is the intensity at x = 0 and alpha is the attenuation constant. Show that the intensity reduces by 75 percent after a distance of (ln 4)/(alpha) (ii) Attenuation of a signal can be expressed in decibel (dB) according to the relation dB = 10log_10 (I//I_0). What is the attenuation in dB//km for an optical fibre in which the intensity falls by 50 percent over a distance of 50 km?

At a distance of 5.0 m from a point sound source, the sound intensity level is 110 dB. At what distance is the intensity level 95 dB?

CENGAGE PHYSICS-SOUND WAVES AND DOPPLER EFFECT-Single Correct
  1. An increase in intensity level of 1 dB implies an increase in intensit...

    Text Solution

    |

  2. In expressing sound intensity we take 10^(-12)(W)/(m^2) as the referen...

    Text Solution

    |

  3. The intensity level of two sounds are 100 dB and 50 dB. What is the ra...

    Text Solution

    |

  4. An engine running at speed (v)/(10) sounds a whistle of frequency 600 ...

    Text Solution

    |

  5. A source of sound produces waves of wavelength 60 cm when it is statio...

    Text Solution

    |

  6. The apparent frequency of the whistle of an engine changes in the rati...

    Text Solution

    |

  7. A source of sound S is travelling at (100)/(3)(m)/(s) along a road, to...

    Text Solution

    |

  8. A source of sound is travelling with a velocity of 30(m)/(s) towards a...

    Text Solution

    |

  9. A source of sound emits 200piW power which is uniformly distributed ov...

    Text Solution

    |

  10. Two cars are moving on two perpendicular roads towards a crossing with...

    Text Solution

    |

  11. A tuning fork of frequency 380 Hz is moving towards a wall with a velo...

    Text Solution

    |

  12. A sound wave of frequency n travels horizontally to the right with spe...

    Text Solution

    |

  13. A boy is walking away from a well at a speed of 1.0 m//s in a directio...

    Text Solution

    |

  14. A source emitting a sound of frequency v is placed at a large distance...

    Text Solution

    |

  15. Due to a point isotropic sonic source, loudness at a point is L=60dB I...

    Text Solution

    |

  16. The frequency of a car horm is 400 Hz. If the horn is honked as the ca...

    Text Solution

    |

  17. Spherical sound waves are emitted uniformly in all direction from a po...

    Text Solution

    |

  18. When a person wears a hearing aid, the sound intensity level increases...

    Text Solution

    |

  19. A motorcycle starts from rest and accelerates along a straight line at...

    Text Solution

    |

  20. The difference in the speeds of sound in air at -5^@C, 60 cm pressure ...

    Text Solution

    |