Given information
Given that, sound level = 40 dB,
and we are asked to find the lowest and highest frequency that a human ear can detect by using the given graph.
Step-by-step explanation
According to the given figure, on the high-frequency side of the chart, there is no intersection of the hearing threshold with the 
level, thus we assume that a signal can be heard all the way up to the highest frequency that a human can hear 
.
The human ear is capable of detecting a wide range of sound intensities. The measuring scale is usually a logarithmic scale with multiples of ten. The decibel scale is used to measure intensity. A sound level of 
decibels is given to the threshold of perceptible sound. The decibel is a measurement for measuring the strength of sound. The use of a logarithmic scale to depict the complete range of human hearing is more convenient.
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Physics: Principles with Applications
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- Problem 1
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- Problem 3b
- Problem 4
- Problem 5a
- Problem 5b
- Problem 6
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- Problem 11
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- Problem 19
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- Problem 28a
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- Problem 32
- Problem 33a
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- Problem 33c
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- Problem 40
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- Problem 51a
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- Problem 53a
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- Problem 54a
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- Problem 55a
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- Problem 56a
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- Problem 60
- Problem 61a
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- Problem 62a
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- Problem 62c
- Problem 63
- Problem 64a
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- Problem 65
- Problem 66a
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- Problem 67a
- Problem 67b
- Problem 68a
- Problem 68b
- Problem 69a
- Problem 69b
- Problem 70