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#152 Bangla Language & Literature General Level 1056

কোন আলোক তরঙ্গে (light spectrum) মানব চোখে দেখতে পাওয়া যায়?

  1. A ১ মিঃ (m) বা উর্ধ্বে
  2. B ১০ থেকে ৪০০ নে.মি. (nm)
  3. C ১০০ মাইক্রোমিটার (um) থেকে ১ মিঃ (m)
  4. D ৪০০ থেকে ৭০০ নে.মি. (nm)
Answer: D - ৪০০ থেকে ৭০০ নে.মি. (nm)

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