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The transverse displacement y(x, t) of a...

The transverse displacement `y(x, t)` of a wave on a string is given by `y(x, t)= e ^(-(ax^(2) + bt^(2) + 2sqrt((ab))xt)`. This represents a :

A

Wave moving along + x-axis with a speed `sqrt((a)/(b))`

B

Wave moving along x-axis with speed `sqrt((b)/(a))`

C

Standing wave of frequency `sqrt (b)`

D

Standing wave of frequency `(1)/(sqrt (b))`

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The correct Answer is:
B
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