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Given the wave function (in S.I. units) ...

Given the wave function (in S.I. units) for a wave to be, `Psi (x,t) = 10^(3) sin pi (3 xx 10^(6) x - 9 xx 10^(14) t)`. The speed of the wave is :

A

`3 xx 10^(6) m // s`

B

`3 xx 10^(7) m // s`

C

`3 xx 10^(8) m // s`

D

`9 xx 10^(14) m // s`

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The correct Answer is:
B
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