An 80-decibel sound is______times louder than a 60-decibel sound.
Correct answer: D. 100
- A. 20
- B. 2
- C. 10
- D. 100
Explanation
A 20-decibel increase represents a 100-fold increase in sound intensity because each 10-decibel increase multiplies intensity by 10. Thus, an 80-dB sound has 100 times the physical intensity of a 60-dB sound.
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