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Which one of the following has the longest wavelength? A) Radio waves B) Sound waves C) X-rays D) Infra-red ray Which one of the following has the longest wavelength? A)Radio wavesB)Sound wavesC)X-raysD)Infra-red ray
Radio waves have the longest wavelength of all electromagnetic waves.
Radio waves have the longest wavelength of all electromagnetic waves. Their size can vary from a foot to a few miles long. Radio waves are used to transmit data for all sorts of things; radios, satellites, radar etc.
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