Wave Motion 2 Question 39
39. When two progressive waves $y _1=4 \sin (2 x-6 t)$ and $y _2=3 \sin \left(2 x-6 t-\frac{\pi}{2}\right)$ are superimposed, the amplitude of the resultant wave is
(2010)
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Answer:
Correct Answer: 39. (5)
Solution:
- Phase difference between the two waves is $90^{\circ}$. Amplitudes are added by vector method.
$\therefore$ Answer is 5 .
