Answer
3.35 m
Work Step by Step
We know,
λ = $\frac{c}{ν}$ where λ is the wavelength, c is the speed of light and ν is the frequency.
i.e. λ =$\frac{3.00\times10^{8}ms^{-1}}{89.5\times10^{6}s^{-1}}$ = 3.35 m
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