Answer
Wavelength = $5.54\times10^{-7}m$
This is a visible light wavelength.
Work Step by Step
Speed of the light, c = $2.997925\times10^{8}$ $ms^{-1}$
Frequency, ν = $5.41\times10^{14}s^{-1}$
Wavelength, λ = c/ν = $\frac{2.997925\times10^{8}ms^{-1}}{5.41\times10^{14}s^{-1}}$ = $5.54\times10^{-7}m$.
This is a characteristic visible light wavelength as the range of visible spectrum is from $4.0\times10^{-7}m$ to $7.5\times10^{-7}m$ (Refer Figure 7.4)
