Calculate the frequency , wave number of the microwaves with `4 xx 10^(7) `nm

Explanation

To solve the problem of calculating the frequency and wave number of microwaves with a wavelength of \(4 \times 10^{7}\) nm, we will follow these steps:

### Step 1: Convert Wavelength from Nanometers to Meters
Given:
\[ \text{Wavelength} (\lambda) = 4 \times 10^{7} \text{ nm} \]
We know that:
...