NEET UG PHYSICS MCQ: WAVES

1 Medium

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Application +4 | -1

A cylindrical tube, closed at one end, has a fundamental frequency f in air. The

\frac{1}{4}th

of the tube is filled with water. The fundamental frequency of the air column is now

View answer and explanation

Correct option: B

\frac{{4f}}{3}

Option B (

\frac{{4f}}{3}

) is correct because filling 1/4 of the tube with water reduces the effective length of the air column, increasing the fundamental frequency.

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