Question

What is the frequency of light in a vacuum that has a wavelength of 72000 m?

(Choose from the following units: m, hz, m/s, s, degrees, dB)

Answer 1

The frequency of light in a vacuum can be calculated using the formula:

c = λν

where c is the speed of light in a vacuum, λ is the wavelength, and ν is the frequency.

Substituting the given values, we get:

c = (3.00 x 10^8 m/s) (speed of light in a vacuum)
λ = 72000 m (wavelength)

c = λν

ν = c / λ

ν = (3.00 x 10^8 m/s) / (72000 m)

ν ≈ 4167 Hz

Therefore, the frequency of light in a vacuum with a wavelength of 72000 m is approximately 4167 Hz. The unit of frequency is hertz (Hz).