Question

The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y. y = 3x10^8/x What is the wavelength for radio waves with frequency 3 × 10^9?

Answer 1

B

Explanation:

Answer 2

The answer is 0.1.

Explanation:

The relationship between wavelength
`x` and frequency
`y` is:

`y=(3*10^8)/(x)`.

We solve this equation for wavelength
`x` and get:

`x=(3*10^8)/(y)`.

Now when the frequency of radio waves is
`3*10^9`, then the wavelenght is:

`x=(3*10^8)/(y)=(3*10^8)/(3*10^9)=10^(-1)=0.1`.

Thus, when frequency of radio waves is
`3*10^9`, then the wavelength is 0.1.