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#55108 Bangla Language & Literature তড়িৎ কোষ Level 0

আলোর বর্ণ নির্ধারন করে তার ---

  1. A কোনোটিই নয়
  2. B গতিবেগ
  3. C তরঙ্গদৈর্ঘ্য
  4. D বিস্তার
Answer: C - তরঙ্গদৈর্ঘ্য

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