Question

The equation of a plane progressive wave is
y = 0.9 sin 4π[t - x/2]. When it is reflected at a rigid
support, its amplitude becomes 2/3 of its previous value.
The equation of the reflected wave is
(a) y = 0.6 sin 4π[t + x/2]
(b) y = -0.6 sin 4π[t + x/2]
(c) y = -0.9 sin 8π[t - x/2]
(d) y = -0.6 sin 4π[t + x/2]

Answer 1

Answer:

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