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Physics · Oct / Nov 2025 · Paper 11 · Question 25

5054Sound

A loudspeaker produces a sound wave of frequency 50 Hz. The amplitude of the sound wave is increased. What is heard?

  1. Aa louder sound of a higher pitch
  2. Ba louder sound of the same pitch
  3. Ca sound of higher pitch but the same loudness
  4. Da sound of the same pitch and same loudness

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Correct answer: B. a louder sound of the same pitch

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