1.

Fig. below shows the wave \[y=A\sin (\omega t-kx)\] at any instant travelling in the +ve x-direction. What is the slope of the curve at B                            

A.            \[\omega /A\]
B.            \[k/A\]
C.            \[kA\]
D.            \[\omega A\]
Answer» D.            \[\omega A\]


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