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The magnifying power of a telescope is 6 in normal adjustment. The distance between its two lenses is 35 cm. The focal lengths of objective and eye-piece are, respectively: |
30 cm, 5 cm 25 cm, 5 cm 5 cm, 30 cm 20 cm, 15 cm |
30 cm, 5 cm |
The correct answer is Option (1) → 30 cm, 5 cm |
