Answer : The frequency of an electromagnetic wave is [tex]6.589\times 10^{10}s^-[/tex].
Solution : Given,
wavelength = [tex]4.55\times 10^{-3}m[/tex]
Speed of light = [tex]2.998\times 10^{8}m/s[/tex]
Formula used :
[tex]\nu=\frac{c}{\lambda}[/tex]
[tex]\nu[/tex] = frequency
[tex]\lambda[/tex] = wavelength
c = speed of light
Now put all the given values in above formula, we get
[tex]\nu=\frac{2.998\times 10^8m/s}{4.55\times 10^{-3}m}=0.6589\times 10^{11}s^-=6.589\times 10^{10}s^-[/tex]
Therefore, the frequency of an electromagnetic wave is [tex]6.589\times 10^{10}s^-[/tex].
