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Which part of the Electromagnetic spetru...

Which part of the Electromagnetic spetrum spectrum is used in operating a RADAR and why?

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Microwaves are used. They are considered suitable for radar systems for aircraft navigation due to their short wavelength of high frequency. Its wavelenght range `1 xx 10^(-3) m "to" 3 xx 10^(-1)` m and frequency range is `3 xx 10^(11) " Hz to " 1 xx 10^(9)` Hz.
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