Problem: What is the wavelength (in nm) of the light emitted by a bar code scanner that has a frequencyof 4.62 x 1014 s-1?a. 6.49 x 10-16 nmb. 6.49 x 10-7 nmc. 649 nmd. 1.39 x 1014 nme. 1.39 x 1023 nm

FREE Expert Solution

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=λν

c = speed of light, m/s
λ = wavelength, in m
ν = frequency, Hz (Hertz)


We can rearrange the equation to isolate the wavelength (λ):

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Problem Details

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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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Speed of Light concept. You can view video lessons to learn Speed of Light Or if you need more Speed of Light practice, you can also practice Speed of Light practice problems .

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Based on our data, we think this problem is relevant for Professor Roe's class at SUNY College at Brockport.