Answer :
Answer:
0.25 m
Explanation:
Electromagnetic waves consist of oscillations of the electric and the magnetic field, oscillating in a plane perpendicular to the direction of motion the wave.
All electromagnetic waves travel in a vacuum always at the same speed, the speed of light, whose value is:
[tex]c=3.0\cdot 10^8 m/s[/tex]
Microwave is an example of electromagnetic waves.
The relationship between wavelength and frequency for an electromagnetic wave is:
[tex]\lambda=\frac{c}{f}[/tex]
where
[tex]\lambda[/tex] is the wavelength
[tex]c=3.0\cdot 10^8 m/s[/tex] is the speed of light
f is the frequency
For the microwave in this problem,
[tex]f=1.2\cdot 10^9 Hz[/tex]
So its wavelength is
[tex]\lambda=\frac{3.0\cdot 10^8}{1.2\cdot 10^9}=0.25 m[/tex]