Physics
In the given diagram, a vibrating tuning fork is kept near the mouth of a burette filled with water. The length of the air column is adjusted by opening the tap of the burette. At a length of 5 cm of the air column, a loud sound is heard.
(a) Name the phenomenon illustrated by the above experiment.
(b) Why is a loud sound heard at this particular length?
(c) If the present tuning fork is replaced with a tuning fork of higher frequency, should the length of the air column increase or decrease to produce a loud sound? Give a reason.
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Answer
(a) Resonance.
(b) The loud sound is audible at this specific length because the tuning fork's frequency and the air column's frequency are equal at that particular length.
(c) Since, frequency of the air column is inversely proportional to the length of the column therefore, in order to create a loud sound, the length of the air column should decrease as the frequency increases.
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