JAMB - Physics (2019 - No. 55)

Radio waves belongs to the class of waves whose velocity is about

340m/s

3 × 10\(^{6}\) m/s

3 × 10\(^{8}\) m/s

3 × 10\(^{-8}\) m/s

解释

3 × 10\(^{8}\) m/s

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