← all questions · Physics · 9702 · Paper 2
Circular water waves are produced by vibrating dippers at points P and Q, as illustrated in Fig. 4.1.
The waves from P alone have the same amplitude at point R as the waves from Q alone. Distance PR is 44 cm and distance QR is 29 cm.
The dippers vibrate in phase with a period of 1.5 s to produce waves of speed 4.0 cm s⁻¹.
Calculate the wavelength of the waves.
9702/02/SP/22Cambridge International AS & A Level Physics 9702 · Specimen 2022 · Paper 2 · Question 4(b)(i)
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Suggested time: 3 min