In a resonance tube experiment, the first two resonances are observed at length 10.5 cm and 29.5 cm. The third resonance is observed at the length(cm).

Question

In a resonance tube experiment, the first two resonances are observed at length 10.5 cm and 29.5 cm. The third resonance is observed at the length(cm). (A) 47.5 (B) 58.5 (C) 48.5 (D) 82.8

Tardigrade Admin · Accepted Answer

(λ/2)=l2-l1=29.5-10.5=19 cm Third resonance will be observed at l3=l2+(λ/2) =29.5+19=48.5 cm

Q. In a resonance tube experiment, the first two resonances are observed at length $10.5 c m$ and $29.5 c m$ . The third resonance is observed at the length_________(cm).

47.5

58.5

48.5

82.8

$\frac{λ}{2} = l_{2} - l_{1} = 29.5 - 10.5 = 19 c m$
Third resonance will be observed at
$l_{3} = l_{2} + \frac{λ}{2}$
$= 29.5 + 19 = 48.5 c m$

Q. In a resonance tube experiment, the first two resonances are observed at length 10.5cm and 29.5cm. The third resonance is observed at the length_________(cm).