A wave is represented by the given equation \( y= \) \( A \sin [10 \pi x+15 \pi x+(\pi / 3)] \) ...

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A wave is represented by the given equation \( y= \) \( A \sin [10 \pi x+15 \pi x+(\pi / 3)] \) where \( x \) is in meter and \( t \) is in second. The expression represents
(A) a wave traveling in the positive \( x \) direction with a velocity of \( 1.5 \mathrm{~m} / \mathrm{s} \).
(B) a wave traveling in the negative \( x \) direction with a velocity of \( 1.5 \mathrm{~m} / \mathrm{s} \).
(C) a wave traveling in the negative \( x \) direction with a wavelength of \( 0.2 \mathrm{~m} \).
(D) a wave traveling in the positive \( x \) direction with a wavelength of \( 0.2 \mathrm{~m} \).
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