We are being asked to calculate the wavelength of the light emitted with a frequency equal to 4.62 x 1014 s-1.
Wavelength, frequency, and the speed of light are connected by the following equation:
c = speed of light, m/s
λ = wavelength, in m
ν = frequency, Hz (Hertz)
We can rearrange the equation to isolate the wavelength (λ):
What is the wavelength (in nm) of the light emitted by a bar code scanner that has a frequency
of 4.62 x 1014 s-1?
a. 6.49 x 10-16 nm
b. 6.49 x 10-7 nm
c. 649 nm
d. 1.39 x 1014 nm
e. 1.39 x 1023 nm
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