A radar sends the waves towards a distant object and receives the signal reflected by object. These waves are

sound waves

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light waves

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radio waves

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microwaves

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Solution

The correct options are
C radio waves
D microwaves
$A n s w e r : -$ C and D option
A radar system consists of a transmitter producing electromagnetic waves in the radio or microwave domain, an emitting antenna, a receiving antenna (separate or the same as the previous one) to capture any returns from objects in the path of the emitted signal, a receiver and processor to determine properties of the object(s).

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