Question

Your microwave oven emits radiation at 2.45 MHz (which can interfere with your WiFi). What is its wavelength?

Answer 1

wavelength = 1.22×10² m

Step-by-step explanation:

Given data:

Frequency of radiation = 2.45 MHz

Wavelength of radiations = ?

Solution:

Formula:

Speed of light = wavelength × frequency

Speed of light = 3 ×10⁸ m/s

Frequency of radiation = 2.45 MHz ( 1 MHz = 1000000 Hz)

= 2450000 Hz (1 s⁻¹ = 1 Hz)

Now we will put the values in formula.

3 ×10⁸ m/s = wavelength × 2450000 s⁻¹

wavelength = 3 ×10⁸ m/s / 2450000 s⁻¹

wavelength = 3 ×10⁸ m/s / 2.45×10⁶s⁻¹

wavelength = 1.22×10² m