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#56003 Bangla Language & Literature General Level 0

‘বেকেরেল’ কিসের একক?

  1. A এক্সরে
  2. B তেজস্ত্রিয়তা
  3. C দীপন ক্ষমতা
  4. D লেন্সের ক্ষমতা
Answer: B - তেজস্ত্রিয়তা

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