The intensity level of sound in a truck is {eq}90 \ dB {/eq}. What is the intensity of this sound?

## Question:

The intensity level of sound in a truck is {eq}90 \ dB {/eq}. What is the intensity of this sound?

## Decibel:

In physics, the decibel is the logarithmic measuring the ratio between two quantities such as electric power, sound intensity and so on.

If P is an energy or power, it is expressed in decibels as follows

{eq}\displaystyle P_{dB} = 10\log_{10}(\frac{P}{P_0}) {/eq}

where {eq}P_0 {/eq} is a reference power.

## Answer and Explanation: 1

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View this answerIn acoustics, the Intensity Level (IL) of a given sound is expressed as

{eq}\displaystyle IL = 10\log_{10}(\frac{I}{I_0}) {/eq}

where...

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Chapter 5 / Lesson 10This lesson explains what wave intensity in physics is, and it explains the intensity of light formula with examples. This lesson also describes how to calculate intensity of sound waves.

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