In a closed organ pipe, the frequency of fundamental note is 30 Hz. A certain amount of water is now poured in the organ pipe so that the fundamental frequency is increased to 110 Hz. If the organ pi…

Question

In a closed organ pipe, the frequency of fundamental note is 30 Hz. A certain amount of water is now poured in the organ pipe so that the fundamental frequency is increased to 110 Hz. If the organ pipe has a cross-sectional area of 2 cm^2, the amount of water poured in the organ tube is _____g. (Take speed of sound in air is 330m/s )

Accepted Answer

Correct answer: 400. (400) V4l_1=30 ⇒l_1= 114 m V4l_2=110 ⇒l_2= 34 m l=2 m Change in volume =A l=400 cm^3 M=400 g ;( ∵ =1 g/ cm^3)

Solution

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