A radio station broadcasts at 100 MHz. What is the wavelength of its waves (speed of light = 3.0 × 10⁸ m/s)?
Correct answer C. 3.0 m
Explanation
λ = v/f = 3.0 × 10⁸ / (100 × 10⁶) = 3.0 m. Treating MHz as kHz would give 3.0 × 10³ m.
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