Physics (AS & A Level) · Feb / March 2025 · Paper 22 · Question 5
9702
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A stationary loudspeaker emits sound of constant frequency. A microphone is placed near to the loudspeaker and connected to a cathode-ray oscilloscope (CRO). The trace on the screen of the CRO is shown in Fig. 5.1. 1 cm 1 cm Fig. 5.1 The time-base of the CRO is set to 5.0 × 10– 4 s cm–1. 1
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5(a)[3]
5(b)[2]
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