Question

What is the frequency of yellow light with a wavelength of 580 nm? 1. 5.2 × 1014 hz 2. 1.9 × 10−17 hz 3. 5.2 × 1016 hz 4. 5.2 × 1012 hz 5. 1.9 × 10−15 hz?

Answer 1

Let's convert the wavelength into meters first:

`\lambda=580 nm=580 \cdot 10^(-9)m`
Then we know that the frequency f is related to the wavelength by the following relationship:

`f= (c)/(\lambda)`
where
`c=3\cdot 10^8 m/s` is the speed of light. Substituting the numbers, we get the frequency:

`f= (3\cdot 10^8 m/s)/(580 \cdot 10^(-9)m)=5.2\cdot 10^(14)Hz`
So, this is approximately the frequency of yellow light.