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gvdothuhue
2 năm trước
Dùng kính lúp có tiêu cự là f=10cm để quan sát 1 vật nhỏ có chiều cao AB=h=0.5cm.Biết khoảng cách từ vật đến kính OA=d=6cm. a. Dựng ảnh A'B' qua kính lúp. b. Tính số bội giác của kính lúp? ( G=?) c. Tính chiều cao của ảnh ? ( A'B'= h' = ? cm )
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