Question

calculate the frequency in hertz of electromagnetic radiation that has a wavelength of 720.0 nm. (c= 3.00 X 10^8 m/s)

Answer 1

Answer:

$f=216s^{-1}=216Hz$

Explanation:

Hello.

In this case, the relationship between wavelength, speed of light and frequency is:

$\lambda=\frac{c }{f}$

It means that solving for the frequency, we obtain:

$f=c*\lambda$

Thus, for the given 720-nm wavelength and the speed of light, the frequency is:

$f=3.00x10^8\frac{m}{s}*720.0nm*\frac{1x10^{-9}m}{1nm}\\ \\f=216s^{-1}=216Hz$

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