Question

Equation of a plane progressive wave is given by
y = 0.6 sin 2π(t - x/2). On reflection from a denser medium
its amplitude becomes 2/3 of the amplitude of the incident
wave. The equation of the reflected wave is
(a) y = 0.6 sin 2π(t + x/2)
(b) y = -0.4sin 2π(t + x/2)
(c) y = 0.4sin 2π(t + x/2)
(d) y = -0.4sin 2π(t- x/2)

Answer 1

Answer:

I think so the answer is___(C)