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In a wave motion y = a sin (kx - omegat)...

In a wave motion `y = a sin (kx - omegat)`, `y` can represent

A

Electric field

B

Magnetic field

C

Displacement

D

Pressure

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The correct Answer is:
A, B, C
Here y can represent all except pressure.._ pressure waves y is the pressure difference not pressure at y point.If it represents pressure then according to this equation pressure can be negative and pressure below vaccum is not possible.
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