Question

A diathermy machine, used in physiotherapy, generates electromagnetic radiation that gives the effect of "deep heat" when absorbed in tissue. If the radiation's frequency is 27.17 MHz, what is its wavelength?

Answer 1

Answer:

The wavelength of the radiation is 11.04 m.

Explanation:

Given that,

The radiation's frequency is 27.17 MHz.

$1\ MHz=10^6\ Hz\\\\27.17\ Mhz=27.17\times 10^6\ Hz$

We need to find the wavelength of the radiation. It can be calculated using the formula of speed of electromagnetic wave as :

$c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8\ m/s}{27.17\times 10^6\ Hz}\\\\\lambda=11.04\ m$

So, the wavelength of the radiation is 11.04 m.