Draw the stationary wave pattern in the fundamental mode for the following cases: (i) an open organ pipe (ii) resonance column apparatus (iii) a rigid metallic rod clamped in the middle, the rod is hit with a stick at one of its free ends .

Draw the stationary wave pattern in the fundamental mode for the follo

1.	Draw the stationary wave pattern in the fundamental mode for the following cases: (i) an open organ pipe (ii) resonance column apparatus (iii) a rigid metallic rod clamped in the middle, the rod is hit with a stick at one of its free ends .
Answer» Solution :Fig. 4.24 (a) : Two antinodes at the two open ENDS and a node between them . (II)Fig . 4 . 24 (B) : An antinode at the open end and the nearest node at thetop of the liquid surface . (iii)fig . 4.24 (c) : twoantinodes at the free ends and only one node between them at the clamped mid-point. In Fig. 4 . 24 (a) and 4 . 24 (b) , it is to be notedthat sound waves are ALWAYS longitudinal waves.For convenience only they have been drawn as trans-verse waves .