The wavelength of light is found to be 6.98 × 10^-8 m.
We know that light is an electromagnetic wave, the speed of an electromagnetic wave is commonly referred to as the speed of light which has a numerical value of 3 × 10^8 m/s.
Now;
c = λf
c = speed of light
λ = wavelength of light
f = frequency of light
But;
λ = c/f
λ = 3 × 10^8 m/s/ 4.3 X 10^15 Hz
λ = 6.98 × 10^-8 m
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