MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
Equal volumes of water are added to three cylindrical jars A, B and C of same height and radii rA, rB and rC respectively with rB < rA < rC. If you blow air into the mouth of these jars, which tube will produce the shrillest note? (a) A (b) B (c) C (d) All will produce the notes of same shrillness
Topic: Resonance of air columns and pitch
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Answer
Exam answer
(b) B.
Explanation
For equal water volumes, the narrowest jar has the greatest water height and therefore the shortest air column, producing the highest frequency.
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