Question

The laser in a 3D printer uses light with a frequency of 3.844 × 1014 Hz. Calculate the wavelength of this light in nm. Show all your calculations. (Hint: Remember the speed of light!)

Answer 1

The wavelength of this light is 780.4 nm.

Step-by-step explanation:

Given that,

The frequency of laser light,
`f=3.844 * 10^(14)\ Hz`

We need to find the wavelength of this light.

We know that,

`c=f\lambda`

Where

`\lambda` is the wavelength of light

So,

`\lambda=(c)/(f)\\\\\lambda=(3* 10^8)/(3.844 * 10^(14))\\\\=7.804* 10^(-7)\ m\\\\=780.4\ nm`

So, the wavelength of this light is 780.4 nm.