When an air column in a pipe closed at one end vibrates such that three nodes are formed in it, the frequency of its vibrations is …….times the fundamental frequency.
(A) 2 (B) 3 (C) 4 (D) 5
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26
Explanation:
option D is our choice....
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Answered by
3
Explanation:
The frequency of 2
nd
overtone in an air column in a pipe closed at one end is given as,
4l
5v
=f
⟹l=
4f
5v
=
4×440
5×330
=
16
15
m
A pressure node is formed at the open end. Thus the value of pressure at the open end always has same value as the mean value P
0
.
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