A-LevelPhysicsSuperposition9702/12 · Feb/Mar 2016 · Q251 Mark

A musical instrument called a bugle is a long tube with a mouthpiece at one end. The other end is open and flared, as shown. [Figure 25.1] A musician maintains stationary sound waves with a node at the mouthpiece and an antinode at the other end. The lowest frequency of sound that the bugle can produce is 92 Hz. Which different frequencies of sound can be produced by the bugle?

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A92 Hz, 138 Hz, 184 Hz, 230 Hz, 276 Hz

B92 Hz, 184 Hz, 276 Hz, 368 Hz, 460 Hz

C92 Hz, 276 Hz, 460 Hz, 644 Hz, 828 Hz

D92 Hz, 276 Hz, 828 Hz, 2484 Hz, 7452 Hz

✓ Correct answer

C: 92 Hz, 276 Hz, 460 Hz, 644 Hz, 828 Hz

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Topic: Superposition, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Feb/Mar 2016 Paper 1 Variant 2, question 25.

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