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Namita · Answer 1 · 2019-12-06T14:52:03+0000

The basic relationship between frequency and wavelength for light (which is an electromagnetic wave) is

$c= f \lambda$
where c is the speed of light, f the frequency and
$\lambda$ the wavelength of the wave.
Using
$\lambda=4.5 \cdot 10^(-7) m$ and
$c=3 \cdot 10^8 m/s$ , we can find the value of the frequency:

$f= (c)/(\lambda)= (3 \cdot 10^8 m/s)/(4.5 \cdot 10^(-7) m)=6.7 \cdot 10^(14) Hz$

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