When a tuning fork, struck by a rubber pad is held over a length of the air column in a tube, it produces a loud sound for a fixed length of the air column.
How does the frequency of the loud sound compare with that of the tuning fork?

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Solution

When a tuning fork is struck by a rubber pad and held over a fixed length of the air column in a tube, it creates a loud sound.
Resonance is the phenomenon that causes the above situation.
In this resonance situation, the tuning fork and the air column share the same vibrational frequency.
Therefore, the frequency of the loud sound is an equal to or integral multiple of the frequency of the tuning fork.

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When a tuning fork, struck by a rubber pad is held over a length of the air column in a tube, it produces a loud sound for a fixed length of the air column.How does the frequency of the loud sound compare with that of the tuning fork?

When a tuning fork, struck by a rubber pad is held over a length of the air column in a tube, it produces a loud sound for a fixed length of the air column.
How does the frequency of the loud sound compare with that of the tuning fork?