MCQ
X-rays are not used for radar purpose because
- ✓They are not reflected by the target
- BThey are not electromagnetic waves
- CThey are completely absorbed by the air
- DThey sometimes damage the target
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$\left({h}=6.63 \times 10^{-34}\, {J} \cdots\right.$, $\left.{c}=3 \times 10^{8} \,{ms}^{-1}\right)$