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A wave travelling along the x-axis is de...

A wave travelling along the x-axis is described by the equation y(x, t) = 0.005 cos (`alpha x - betat`). If the wavelength and the time period of the wave are 0.08 m and 2.0 s, respectively, then a and p in appropriate units are

A

`alpha =( 0.08)/( pi ) ,beta =( 2.0)/( pi ) `

B

` alpha = ( 0.04)/( pi) ,beta =(1.0)/(pi)`

C

`alpha =12.50 pi , beta =(pi)/( 2.0)`

D

`alpha =25.00pi, beta =pi`

Text Solution

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The correct Answer is:
B
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