A tube of length 1m containing H2 is closed at one end. If the velocity of sound in air be 340m/s. Then, the fundamental frequency and the next higher overtone in H2 are:
The correct option is C85Hz,255Hz For a closed organ pipe only odd harmonic will exist. The fundamental frequency is, f1=v4L=3404×1=85Hz The next higher overtone will be 3rd harmonic or 1st overtone. f3=3v4L=3f1=3×85=255Hz ∴(c) is the correct option.