Question

A point located 5cm away from a source of sinusoidal oscillations has a displacement equal to half of the maximum amplitude at time t=T/4 (where T is the time period). The source was at its mean position at t=0. What is the wavelength of the wave?

A 0.3 m
B 0.6 m
C 0.10 m
D 0.15m
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