Wave motionHard
Question
A wave y = 10 sin (ax + bt) is reflected from a dense medium at an origin. If 81% of energy is reflected then the equation of reflected wave is:
Options
A.y = − 8.1 sin (ax - bt)
B.y = 8.1 sin (ax + bt)
C.y = −9 sin (bt - ax)
D.y = 10 sin (ax - bt)
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