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Question

X-rays are not used in RADAR, because

A
X-rays are not reflected by target.
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B
X-rays are completely absorbed by air.
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C
X-rays damage the target.
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D
All of the above.
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Solution

The correct option is A X-rays are not reflected by target.
X rays, having extremely high frequency and low wavelength, would not be suitable to use as RADAR because they would penetrate the obstacle instead of reflecting and coming back.

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