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प्रश्न
The radioactive radiations which are not electrically charged, travel at the speed of ______.
पर्याय
6 × 108 m s−1
3 × 108 m s−1
MCQ
रिकाम्या जागा भरा
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उत्तर
The radioactive radiations which are not electrically charged, travel at the speed of 3 × 108 m s−1.
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