Sounds above the ______ decibel is considered to be harmful to us.

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100

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Solution

The correct option is D 100

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Similar questions

Q. Sound becomes hazardous noise pollution at decibels
(a) above 30
(b) above 80
(c) above 100
(d) above 120

Q. Decibel is the unit used to measure which characteristic of sound?

Consider the following statements about :

Which of the above statements is/are incorrect?

1 only
3 only
1 and 3
None of these

Decibel (dB) is a unit of loudness of sound. It is defined in a manner such that when the amplitude of the sound is multiplied by a factor of $\sqrt{10}$ , the decibel level increases by 10 units. Loud music of 70dB is being played at a function. To reduce the loudness to a level of 30dB, the amplitude of the instrument playing music has to be reduced by a factor of:

The logarithmic scale is used to describe decibel because a very large range of ratios can be represented by a convenient number.

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