Flag Wave Motion> The first overtone of an o0pen organ pipe...
question mark

The first overtone of an o0pen organ pipe beats with the first overtone of a closed organ pipe with a beat frequency of 2.2 Hz. The fundamental frequency of the closed organ pipe is 110 Hz. Find the lengths of the pipes.

Simran Bhatia , 10 Years ago
Grade 11
anser 1 Answers
Aditi Chauhan

Last Activity: 10 Years ago

Hello Student,
Please find the answer to your question
236-1387_6.png
First overtone frequency
0 = ℷ
⇒ (v1)0 = v/ℷ’ = v/ ℓ0 = 330/ ℓ0
Fundamental frequency
236-277_6.png
c = ℷ1/4 ⇒ ℷ1 = 4 ℓc
⇒ (v1)c = v 4 ℓc = 10 Hz (given)
But beat frequency is 2.2
Case 1 : (v1)0 > (v1)c
(v1)0 - (v1)c = 2.2
⇒ 330/ℓ0 – 330 = 2.2 ⇒ ℓ0 = 0.9933 m
236-2109_6.png
Case 2 : (v1)0 < (v1)c
(v1)0 - (v1)c = 2.2
330 – 330/ℓ0 = 2.2 ⇒ ℓ0 = 1.006 m

Thanks
Aditi Chauhan
askIITians Faculty

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...