A tuning fork of frequency 400 Hz resonates with a tube closed at one end of length 20 cm and diameter 6 cm in fundamental mode

Question

A tuning fork of frequency 400 Hz resonates with a tube closed at one end of length 20 cm and diameter 6 cm in fundamental mode The velocity of sound in air is 318 6 ms 1 332 8 ms 1 218 8 mc 1

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