Question

The portion of the visible spectrum that appears brightest to the human eye is around 562 nm in wavelength, which corresponds to yellow-green. the speed of light is 3 × 108 m/s. what is the frequency of 562 nm light? answers

Answer 1

The relationship between frequency and wavelength for electromagnetic waves is

`f= (c)/(\lambda)`
where
f is the frequency
c is the speed of light

`\lambda` is the wavelength

The light in our problem has a wavelength of

`\lambda=562 nm=5.62 \cdot 10^(-7) m`
so its frequency is (using the previous equation)

`f= (c)/(\lambda)= (3 \cdot 10^8 m/s)/(5.62 \cdot 10^(-7)m) =5.34 \cdot 10^(14) Hz`