7.2a Ex2 MJ20 P12 Q23 CRO Readings | AS Waves | Cambridge A Level 9702 Physics
Автор: ETphysics
Загружено: 2020-11-16
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Example 2 - 9702/12/M/J/20: A microphone connected to the Y-plates of a cathode-ray oscilloscope (CRO) is placed in front of a loudspeaker. The trace on the screen of the CRO is shown.
The time-base setting is 0.5 ms cm^–1 and the Y-plate sensitivity is 0.2 mV cm^–1.
What is the frequency of the sound from the loudspeaker and what is the amplitude of the trace
on the CRO?
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