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microwaves are used as Radar. why?

microwaves are used as Radar. why?

Grade:8

1 Answers

Apoorva Arora IIT Roorkee
askIITians Faculty 181 Points
9 years ago
A typical radio wave of say 300MHz(FM radio is cut off at 100MHz) frequency has a wave length of 1m at this frequency and lower, the wave will diffract(bend around) a typical plane even a jumbo jet.
Microwaves at 10GHz (frequency) have a wavelength of 3 cm so they bounce off even the smallest aircraft(stealth planes are an exception of course). So they are much more suited to avoid getting bombed.

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