Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?
Correct answer: C. 170
- A. 120
- B. 140
- C. 170
- D. 200
Explanation
A jet engine operating with an afterburner produces an exceptionally intense sound level, commonly estimated at about 170 dB at a 100 m distance. The lower values are more typical of less extreme aircraft noise, while 200 dB is unrealistically high for this setting.
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