Answer :


Equation for wave y = A sin(ωt – kx)

We know that the argument for the sine function is always in degrees or radians and therefore dimensionless. And we know that only dimensionally like quantities can be added or subtracted, therefore the quantities ωt and kx must be dimension less, therefore

but t =


But x =

Therefore, the dimensional formulas are (i) ω = [M0L0T-1] and (ii) k =[M0L-1T0]

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