What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m

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

answer: c.

explanation:

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