Answer:
Given: Wavelength (λ) = 800 nm
Frequency [tex]\nu=\frac{c}{\lambda} \Rightarrow \nu = \frac{3\times10^8}{800\times 10^{-9}} =3.75\times10^{14} Hz[/tex]
Angular frequency [tex]\omega=2\pi \nu \Rightarrow \omega = 2\pi 3.75\times10^{14} = 23.55\times10^{14} rad/s[/tex]
Wavenumber, [tex]k=\frac{2\pi}{\lambda} \Rightarrow k =\frac{2\pi}{800\times 10^{-9}}=7.85\times 10^6m^{-1}[/tex]
wave vector amplitude |k| = k = [tex]7.85\times 10^6m^{-1}[/tex]
energy, [tex] E = h \nu \Rightarrow E = 6.63\times 10^{-34}\times 3.75\times10^{14} = 24.86\times 10^{-20}J [/tex]
momentum, [tex]p=\frac{h}{\lambda} = \frac{6.63\times 10^{-34}}{800\times 10^{-9}}= 8.28\times 10^{-28}Ns[/tex]
