Let's assume these microwaves are traveling in a vacuum, then this equation holds true:
c = fλ
c is the speed of light in a vacuum, f is the frequency, and λ is the wavelength.
Given values:
c = 3×10⁸m/s
λ = 20×10⁻³m
Plug in the values and solve for f:
3×10⁸ = f(20×10⁻³)
f = 15GHz
Choice A
Frequency is the rate of oscillation of wave. The frequency of the given microwaves is 15 GHz.
The frequency of the wave can be calculated by the formula,
c = f.λ
Where,
c - speed of light in a vacuum = 3×10⁸ m/s
f - frequency = 20×10⁻³ m
λ- wavelength.
Put the values and solve for f:
3×10⁸ = f (20×10⁻³)
f = 15 GHz
Therefore, the frequency of the given microwaves is 15 GHz.
To know more about microwaves,
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