Question

The speed of all electromagnetic waves is 3.00 × 108 meters per second. What is the wavelength of an X-ray with a frequency of 1.18 × 1018 Hz?

Answer 1

C. 2.54 × 10-10 meters

Step-by-step explanation:

Eng 2021

Answer 2

Step-by-step explanation:

It is given that,

The speed of electromagnetic wave,
`v=3* 10^8\ m/s`

Frequency of x-ray,
`\\u=1.18* 10^(18)\ m/s`

We need to find the wavelength of an x - ray. The speed of a wave is given by the product of frequency and the wavelength. It is given by using relation as :

`v=\\u * \lambda`

`\lambda=(v)/(\\u)`

`\lambda=(3* 10^8\ m/s)/(1.18* 10^(18))`

`\lambda=2.54* 10^(-10)\ m`

Hence, this is the required solution.