Answer:
D. 1 × 10⁻⁴ m
Explanation:
Electromagnetic waves travel through space with the speed of light which is approximately 3.0 ×10⁻⁸ m/s.
The speed is calculated as follows:
c=λf
Where λ is the wavelength of the wave, f the frequency and c the speed of light.
Thus λ=c/f
=(3×10⁸ m/s) / (3×10¹²Hz)
Wavelength, λ= 1 × 10⁻⁴ m
