Home
Class 11
PHYSICS
An increase in intensity level of 1 dB i...

An increase in intensity level of 1 dB implies an increase in intensity of (given anti `log_(10)0.1=1.2589`)

A

`1%`

B

`3.01%`

C

`26%`

D

`0.1%`

Text Solution

Verified by Experts

The correct Answer is:
C
Intensity level is decibel is given by
`L=10log_(10)((I)/(I_0))`
`L+1=10log_(10)((I_1)/(I_0))`
Subtracting, `1=10log_(10)((I_1)/(I_0))-10log_(10)((I)/(I_0))`
or `(1)/(10)=log_(10)((I_1)/(I))`
or `0.1=log_(10)((I_1)/(I))`
or `(I_1)/(I)=1.26`
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Multiple Correct|44 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Assertion-Reasoning|24 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Subjective|56 Videos

  • RIGID BODY DYNAMICS 2

    CENGAGE PHYSICS ENGLISH|Exercise Interger|2 Videos

  • SUPERPOSITION AND STANDING WAVES

    CENGAGE PHYSICS ENGLISH|Exercise Comprehension Type|5 Videos

Similar Questions

Explore conceptually related problems

As the intensity of incident light increases

Most people interpret a 9.0 dB increase in sound intensity level as a doubling in loudness. By what factor must the sound intensity be increase to double the loudness?

Most people interpret a 9.0 dB increase in sound intensity level as a doubling in loudness. By what factor must the sound intensity be increase to double the loudness?

The intensity of the ground waves decrease with increase of distance due to

Calculate the change in intensity level when the intensity of sound increases by 10^(6) times its original intensity.

(A): With increase of intensity of incident light, photoelectric current also increases. (R): If the intensity of incident radiation is increased, more number of photons strike the metal surface there by liberating more photoelectrons. Then photoelectric current increases.

Find intensity of sound in dB if its intensity in W // m^(2) is 10^(-10) .

(a) By what factor must the sound intensity be increased the sound intensity level by 13.0 dB ? (b) Explain why you do not need to know the original sound intersity ?

Assertion: we can increases the saturation current in photoelectric experiment without increasing the intensity of light. Reason: Instensity can be increased by increasing the frequency of incident photons.

Intensity level at a point is 100 dB. How much is the actual intensity of sound falling at that point ? Given threshold intensity of sound is 10^(-12) "Wm"^(-2) .

CENGAGE PHYSICS ENGLISH-SOUND WAVES AND DOPPLER EFFECT-Single Correct
  1. A train is moving with a constant speed along a cirular track. The eng...

    Text Solution

    |

  2. An observer moves towards a stationary source of sound with a velocity...

    Text Solution

    |

  3. An increase in intensity level of 1 dB implies an increase in intensit...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  16. A source emitting a sound of frequency f is placed at a large distance...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |