In the relation $y = a\cos (\omega t - kx)$, the dimensional formula for $k$ is
In the relation $y = a\cos (\omega t - kx)$, the dimensional formula for $k$ is
- A
$[{M^0}{L^{ - 1}}{T^{ - 1}}]$
- B
$[{M^0}L{T^{ - 1}}]$
- C
$[{M^0}{L^{ - 1}}{T^0}]$
- D
$[{M^0}LT]$
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