Question

The range of sound level of a jet aircraft at take-off stage is around

• A. 80--90 dB
• B. 90--100 dB
• C. 100--110 dB
• D. 70--80 dB

Hint:

Typical sound levels: \[ \boxed{ \begin{aligned} \text{Normal conversation} &\approx 60\ \text{dB} \text{Busy traffic} &\approx 80\text{--}90\ \text{dB} \text{Jet aircraft (take-off)} &\approx 100\text{--}110\ \text{dB} \end{aligned} } \]

Answer 1

The Correct Option is C

Step 1: Recall typical environmental noise levels. A jet aircraft during take-off generates extremely high sound levels.

Step 2: Identify the closest range. The typical sound level is approximately \[ \boxed{100\text{--}110\ \text{dB}} \] Hence, \[ \boxed{(C)} \] is the correct answer.