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A wave disturbance in a medium is descri...

A wave disturbance in a medium is described by `y(x,t) = 0.02 "cos"(50pit + (pi)/(2))"cos"(10pix)` where x and y are in metre and t is in second . Which of the following is correct ?

A

A displacement node occurs at x = 0.15 m

B

An antinode occurs at `x = 0.3 m`

C

The wavelength of the wave is 0.2 m

D

The speed of the wave is 5.0 m/s

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