কোষ করে অবস্থিত দুটি দর্পণের মাঝে ১টি বস্তু স্থাপন করিবে কয়টি প্রতিহিত সৃষ্টি হয়?
A. 10
B. 15
C. 2
D. 5
সঠিক উত্তরঃ
D.
5
Explanation:
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