Q.1-How to produce standing wave in open organ pipe ? Q

Q.1-How to produce standing wave in open organ pipe ?
Q.2- Define nodes and anti-nodes ? Show that odd and even both types of phoemonix produce in organ pipe?
Q.3-Show that only odd harmonics produce in closed organ pipe?
Q.4-Define pizo electric defect and magnetic striceion .? Describe the method of all ultra Sonic generation.
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