Answer
(a) $6.25\times10^{-8}\,m$
(b) $2.54\times10^{-6}\,m$
(c) $5.51\times10^{-5}\,m$
Work Step by Step
(a) Wavelength $\lambda=\frac{c}{\nu}$ where $c$ is the speed of light and $\nu$ is the frequency.
That is, $\lambda= \frac{3.00\times10^{8}m/s}{4.80\times10^{15}\,s^{-1}}=6.25\times10^{-8}\,m$
(b) $\lambda=\frac{c}{\nu}= \frac{3.00\times10^{8}m/s}{1.18\times10^{14}\,s^{-1}}=2.54\times10^{-6}\,m$
(c) $\lambda= \frac{3.00\times10^{8}m/s}{5.44\times10^{12}\,s^{-1}}=5.51\times10^{-5}\,m$
