A) 320m/s, 120 Hz
B) 180m/s, 80 Hz
C) 180m/s, 120 Hz
D) 320m/s, 80 Hz
Correct Answer: D
Solution :
[d] \[3\left( \frac{\text{v}}{2\ell } \right)=240\] |
\[3\frac{\text{v}}{2\times 2}=240\] |
\[\text{v}=320m/s\] |
fundamental frequency\[=\frac{\text{v}}{2\ell }=\frac{320}{2\times 2}=80Hz.\] |
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