What is the frequency of a photon of light with a wavelength of 615 nm?

Question

Quizplus · Accepted Answer

Use the equation c = λf, where c is the speed of light, λ is the wavelength, and f is the frequency.

First, convert the wavelength from nm to meters:

615 nm = 615 x 10^-9 m

Then, plug in the values:

c = 3.00 x 10^8 m/s 
λ = 615 x 10^-9 m

3.00 x 10^8 m/s = (615 x 10^-9 m) f

Solving for f:

f = (3.00 x 10^8 m/s) / (615 x 10^-9 m)

f = 4.88 x 10^14 Hz

Therefore, the frequency of the photon is 4.88 × 10^14 Hz, which corresponds to choice B.

What Is the Frequency of a Photon of Light with a Wavelength