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The equation of two progressive waves ar...

The equation of two progressive waves are `y^' = 8sin(200pit - x/8 + pi)` and `y^'' = 6 sin( 200pit -x/8)` cm. if two waves superpose at a point , the resultant amplitude is

A

14 cm.

B

10 cm.

C

2 cm.

D

between 14 cm and 2 cm.

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The correct Answer is:
C
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