How are standing sound waves formed?
When two sound waves of the same frequency travel towards each other and superpose, a standing wave is formed.
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Is an antinode or a node formed at a closed end of an air column?
Node
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Is an antinode or a node formed at the open end of an air column?
Antinode
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Describe the first harmonic of a stationary wave in an air column open at both ends.
Antinode at each open end and a node in the centre of the air column.
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What does the distance between two adjacent nodes represent?
The distance between two adjacent nodes is equal to half a wavelength.
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