An intruder alarm is adjusted to give a quieter sound without affecting the pitch of the note. How are the amplitude and the frequency of the sound affected?

5054_s16_qp_11

MCQ

2016

Paper 1, Variant 1

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The diagram shows a loudspeaker that is producing a continuous sound wave of frequency 200 Hz in air. loudspeaker P Which diagram best shows how the sound wave causes a molecule at P to move during s ?

5054_s18_qp_11

MCQ

2018

Paper 1, Variant 1

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The diagram shows a loudspeaker that is producing a continuous sound wave of frequency 200 Hz in air. loudspeaker P Which diagram best shows how the sound wave causes a molecule at P to move during s ?

5054_s18_qp_12

MCQ

2018

Paper 1, Variant 2

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There is varying current in the coil of the loudspeaker shown...

5054_s20_qp_11

MCQ

2020

Paper 1, Variant 1

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Ultrasound is a type of sound wave that is not audible to a healthy human ear. Which range of frequencies contains only ultrasound?

5054_s23_qp_12

MCQ

2023

Paper 1, Variant 2

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The speed of sound in air is 330 m / s. Which sound is classed as ultrasound?

5054_s24_qp_12

MCQ

2024

Paper 1, Variant 2

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The diagrams show oscilloscope traces of sounds picked up by microphones. The oscilloscope controls are set in the same position for all the traces. Which trace shows the sound that is both loud and low-pitched?

5054_w06_qp_1

MCQ

2006

Paper 1, Variant 0

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The diagram shows the trace produced on a cathode-ray oscilloscope (c.r.o.) by a sound. Which trace is produced when both the loudness and the pitch of the sound are increased?

5054_w09_qp_1

MCQ

2009

Paper 1, Variant 0

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is the circuit diagram for the volume control of a loudspeaker. input voltage S C loudspeaker The circuit includes a variable potential divider . The input voltage is connected across the ends of the potential divider. The loudspeaker is connected between the sliding contact S and the terminal C. The sliding contact S is moved towards C. State and explain the effect on the sound produced. The loudspeaker emits a sound of constant pitch. Over a period of time, this sound becomes louder and louder. State the effect, if any, on the amplitude and on the frequency of the sound wave during this time. the amplitude the frequency

5054_w11_qp_21

THEORY

2011

Paper 2, Variant 1

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The sounds produced by two musical instruments are directed towards a microphone connected to an oscilloscope (c.r.o.). The waveforms produced on the screen are shown...

5054_w13_qp_11

MCQ

2013

Paper 1, Variant 1

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