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Solve the all parts of following parts:

Problem: A refracting telescope is used to view the Moon (diameter 3480 km, distance from Earth 385,000 km). The focal lengths of the objective and eyepiece are +2.45 m and +16.1 cm, correspondingly.

Part I: What should be the distance between the lenses?

Part II: What is the diameter of the image produced by the objective?

Part III: What is the angular magnification?

If possible just a brief explanation how you got the answer?

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