Question

An organ pipe with both ends open has length 1.5 m.assumin the spped of sound is 340m/s.find the frquency of the third harmonic of this pipe is?​
170
340
680
900

Answer 1

Explanation:

in the question given that

speed of sound (v)=340m/s

length of pipe (L)=1.5m

we know that for open organ pipe, frequency of nth hormonics will be

= nv/2L

so for third hormonics n=3

=3×340/2×1.5

=3×340/3

=340Hz