the shortest length of the air column in a resonance tube at resonance is 0.12m...

WAEC 1998

the shortest length of the air column in a resonance tube at resonance is 0.12m and the next resonance length is 0.37m. calculate the frequency of vibration given that the speed of sound in air is 340m^-1

A. 1360Hz
B. 694Hz
C. 680Hz
D. 34Hz
E. 340Hz

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Correct Answer: Option C

Explanation

f = \(\frac{v}{2(l_2 - l_1)} = \frac{340}{2(0.37 - 0.12)} = \frac{34}{0.5}\) = 680

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the shortest length of the air column in a resonance tube at resonance is 0.12m...

Correct Answer: Option C

Explanation

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