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DOS is a ____ system.

DOS is a ____ system. Correct Answer Disk operating

দিনের বেলায় সূর্যালোকে গাছের পাতা সবুজ দেখায় অথচ লাল আলোতে পাতার রং কালো বলে মনে হয়। দিনে গাছের পাতার ক্লোরোফিল সবুজ বাদে অন্য সব বর্ণ শোষণ করে ফলে সবুজ দেখায়। কিন্তু সবুজ পাতা লাল আলোকে শোষণ করে নেয় বলে আর প্রতিফলিত হয় না ফলে লাল আলোতে সবুজ পাতা কালো দেখায়।

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