Monochromatic light of wavelength $589\;nm$ is incident from air on a water surface. What is the wave length frequency and speed of reflected light ? $\mu$ of water is 1.33

Question

$\begin{array}{1 1} \lambda= 5.09 \times 10^{-9}; \quad \alpha= 5.89 \times 10^{14}hertz \quad c= 3 \times 10^8\;m/s \\ \lambda= 589 \times 10^{-9}; \quad \alpha= 5.09 \times 10^{-14}hertz \quad c= 3 \times 10^8\;m/s \\ \lambda= 589 \times 10^{-9}; \quad \alpha= 5.09 \times 10^{14}hertz \quad c= 3 \times 10^8\;m/s \\ \lambda= 589 \times 10^{9}; \quad \alpha= 5.09 \times 10^{14}hertz \quad c= 3 \times 10^8\;m/s \end{array} $