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Presentasi 4DX |

MEREK : power 4d

Presentasi 4DX |

power 4dHMP 4D memiliki 46. A convex lens of power +6 D is placed in contact with a concave lens of power –4D. What will be the nature and focal length of this combination ? (a) convex, 100 cm (b) convex, 50 cm

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